{"id":28595,"date":"2026-08-12T15:36:36","date_gmt":"2026-08-12T07:36:36","guid":{"rendered":"https:\/\/wanzhisteels.com\/?p=28595"},"modified":"2026-08-12T15:37:49","modified_gmt":"2026-08-12T07:37:49","slug":"stainless-steel-tube","status":"publish","type":"post","link":"https:\/\/wanzhisteels.com\/fa\/stainless-steel-tube\/","title":{"rendered":"Stainless Steel Tube"},"content":{"rendered":"<div class=\"wp-block-uagb-container uagb-block-a30c4b78 alignwide uagb-is-root-container\"><div class=\"wp-block-aioseo-breadcrumbs\"><div class=\"aioseo-breadcrumbs\"><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/wanzhisteels.com\/fa\" title=\"\u0635\u0641\u062d\u0647 \u0627\u0635\u0644\u06cc\">\u0635\u0641\u062d\u0647 \u0627\u0635\u0644\u06cc<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">\u00bb<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/wanzhisteels.com\/fa\/category\/products\/\" title=\"\u0645\u062d\u0635\u0648\u0644\u0627\u062a\">\u0645\u062d\u0635\u0648\u0644\u0627\u062a<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">\u00bb<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/wanzhisteels.com\/fa\/category\/products\/stainless-steel\/\" title=\"Stainless steel\">Stainless steel<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">\u00bb<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\tStainless Steel Tube\n\t\t<\/span><\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-7387b849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-stretch is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:40%\">\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" width=\"480\" height=\"360\" src=\"https:\/\/wanzhisteels.com\/wp-content\/uploads\/2026\/07\/ASTM-A312-316L-stainless-steel-pipe-316L-welded-stainless-steel-pipe.jpg\" alt=\"ASTM A312 316L stainless steel tube 316L welded stainless steel tube\" class=\"wp-image-28253\" style=\"aspect-ratio:4\/3;object-fit:cover\" srcset=\"https:\/\/wanzhisteels.com\/wp-content\/uploads\/2026\/07\/ASTM-A312-316L-stainless-steel-pipe-316L-welded-stainless-steel-pipe.jpg 480w, https:\/\/wanzhisteels.com\/wp-content\/uploads\/2026\/07\/ASTM-A312-316L-stainless-steel-pipe-316L-welded-stainless-steel-pipe-300x225.jpg 300w, https:\/\/wanzhisteels.com\/wp-content\/uploads\/2026\/07\/ASTM-A312-316L-stainless-steel-pipe-316L-welded-stainless-steel-pipe-16x12.jpg 16w\" sizes=\"(max-width: 480px) 100vw, 480px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"padding-right:30px;padding-left:30px\">\n<div class=\"wp-block-uagb-advanced-heading uagb-block-1b2a6fab\"><h1 class=\"uagb-heading-text\">Stainless Steel Tube<\/h1><\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<p class=\"wp-block-paragraph\">Outer Diameter(OD): 3~219.1 mm<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Wall thickness (WT):\u00a00.5~12.7 mm<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Manufacturing: Seamless or Welded<\/p>\n\n\n\n<div class=\"wp-block-uagb-buttons uagb-buttons__outer-wrap uagb-btn__default-btn uagb-btn-tablet__default-btn uagb-btn-mobile__default-btn uagb-block-08d4230f\"><div class=\"uagb-buttons__wrap uagb-buttons-layout-wrap\">\n<div class=\"wp-block-uagb-buttons-child uagb-buttons__outer-wrap uagb-block-ea26c1ae wp-block-button\"><div class=\"uagb-button__wrapper\"><a class=\"uagb-buttons-repeater wp-block-button__link\" aria-label=\"\" href=\"#ds-open-popup-1\" rel=\"follow noopener\" target=\"_self\" role=\"button\"><div class=\"uagb-button__link\">Send Inquiry<\/div><\/a><\/div><\/div>\n<\/div><\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-uagb-buttons uagb-buttons__outer-wrap uagb-btn__default-btn uagb-btn-tablet__default-btn uagb-btn-mobile__default-btn uagb-block-4dc95628\"><div class=\"uagb-buttons__wrap uagb-buttons-layout-wrap\">\n<div class=\"wp-block-uagb-buttons-child uagb-buttons__outer-wrap uagb-block-3f9bab75 wp-block-button\"><div class=\"uagb-button__wrapper\"><a class=\"uagb-buttons-repeater wp-block-button__link\" aria-label=\"\" href=\"#Product-Introduce\" rel=\"follow noopener\" target=\"_self\" role=\"button\"><div class=\"uagb-button__link\">Product Details<\/div><\/a><\/div><\/div>\n\n\n\n<div class=\"wp-block-uagb-buttons-child uagb-buttons__outer-wrap uagb-block-b19620f1 wp-block-button\"><div class=\"uagb-button__wrapper\"><a class=\"uagb-buttons-repeater wp-block-button__link\" aria-label=\"\" href=\"#Why-choose-us\" rel=\"follow noopener\" target=\"_self\" role=\"button\"><div class=\"uagb-button__link\">Why choose us<\/div><\/a><\/div><\/div>\n<\/div><\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-f4708239\" id=\"Product-Introduce\"><h2 class=\"uagb-heading-text\">What Is a Stainless Steel Tube?<\/h2><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">A stainless steel tube is a precision hollow section defined by <strong>outside diameter<\/strong> and <strong>wall thickness<\/strong>. That fact shapes everything downstream: which fittings you use, how you calculate pressure rating, and how you price by weight. Tubes are supplied to tight OD and wall tolerances because they join with compression fittings, orbital welds, or precision couplings where a 0.1 mm mismatch causes leaks.<\/p>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-2ab37d55\"><h3 class=\"uagb-heading-text\">Tube vs Pipe: NPS vs OD<\/h3><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">The costliest mistake in industrial procurement is treating &#8220;stainless steel pipe vs tube&#8221; as a vocabulary choice. They are governed by different dimension systems.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Pipe<\/strong> is sized by <strong>NPS (Nominal Pipe Size)<\/strong> and <strong>schedule<\/strong> (wall thickness). A 2&#8243; NPS Sch 40 pipe has an outside diameter of 60.3 mm\u2014not 50.8 mm. The NPS number is a name, not a measurement.<\/li>\n\n\n\n<li><strong>Tube<\/strong> is sized by actual <strong>OD<\/strong> and <strong>wall<\/strong> in mm or inches. A 2&#8243; OD tube is 50.8 mm outside, and its wall is quoted directly.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Why it matters: if your P&amp;ID calls for 2&#8243; tube but your buyer sources 2&#8243; NPS pipe, the OD difference of roughly 9.5 mm means compression fittings will not seat. That is exactly how field leaks and rework budgets appear. In short: pipe carries by schedule-rated pressure in process lines; tube carries by precise OD in instrumentation, heat transfer, sanitary, and structural systems.<\/p>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-8695bddf\"><h3 class=\"uagb-heading-text\">Seamless vs Welded: How Tubes Are Made<\/h3><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">The seamless vs welded question hinges on how the hollow is formed and what your service demands.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Seamless tube<\/strong> is extruded or pierced from a billet, then cold-drawn. With no weld seam, it offers uniform integrity for high-pressure, corrosive, or safety-critical service (instrumentation, heat exchangers, boilers).<\/li>\n\n\n\n<li><strong>Welded tube (ERW)<\/strong> is formed from strip and longitudinally welded, then cold-sized and annealed. Modern ERW welds are fully tested and, for many applications, perform like seamless at lower cost. Welded routes dominate sanitary, mechanical, and decorative tube.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Specify seamless where the weld is a risk you cannot inspect; choose welded where cost, surface, and dimensional consistency win and the standard permits it.<\/p>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-aafd1145\"><h2 class=\"uagb-heading-text\">Stainless Steel Tube Types<\/h2><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Once you understand OD-based sizing, the next call is manufacturing route and cross-section shape. Each type serves a different buyer.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Seamless Stainless Steel Tube<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Seamless tube is the integrity-first choice. It is extruded or pierced from a billet, then cold-drawn for consistent wall and smooth bore. Typical uses include instrument lines, heat-exchanger U-tubes, and high-pressure utility lines. When the spec says &#8220;no weld,&#8221; this is your only route.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Welded (ERW) Stainless Steel Tube<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Welded tube starts as coiled or sheet strip, is rolled into shape, and joined by electric resistance welding, then typically solution- or bright-annealed and eddy-current tested. For sanitary, mechanical, and structural jobs, welded tube gives better surface, tighter straightness, and lower cost than seamless.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Shapes: Round, Square, Rectangular &amp; Decorative<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Beyond the round tube, buyers routinely need:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Square and rectangular tube<\/strong> for frames, handrails, balustrades, and structural members (usually A554 mechanical tube).<\/li>\n\n\n\n<li><strong>Decorative tube<\/strong> with polished or brushed finishes for architecture and retail fit-out.<\/li>\n\n\n\n<li><strong>Coiled and capillary tube<\/strong> for refrigeration and instrumentation where long, bendable runs matter.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Shape is mostly mechanical and aesthetic, but it still follows the same grade and standard logic.<\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-7387b849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"wp-block-uagb-image uagb-block-7cec76c4 wp-block-uagb-image--layout-default wp-block-uagb-image--effect-static wp-block-uagb-image--align-none\"><figure class=\"wp-block-uagb-image__figure\"><img decoding=\"async\" src=\"https:\/\/wanzhisteels.com\/wp-content\/uploads\/2026\/08\/Reinforced-stainless-steel-welded-tube.jpg\" alt=\"Reinforced stainless steel welded tube\" class=\"uag-image-28613\" width=\"480\" height=\"360\" title=\"Reinforced stainless steel welded tube\" loading=\"lazy\" role=\"img\" \/><\/figure><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"wp-block-uagb-image uagb-block-ebd6d216 wp-block-uagb-image--layout-default wp-block-uagb-image--effect-static wp-block-uagb-image--align-none\"><figure class=\"wp-block-uagb-image__figure\"><img decoding=\"async\" src=\"https:\/\/wanzhisteels.com\/wp-content\/uploads\/2026\/08\/Stainless-steel-oval-tube.jpg\" alt=\"Stainless steel oval tube\" class=\"uag-image-28614\" width=\"500\" height=\"375\" title=\"Stainless steel oval tube\" loading=\"lazy\" role=\"img\" \/><\/figure><\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-927a0c98\"><h2 class=\"uagb-heading-text\">Material Grades: 304 vs 316L<\/h2><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">The grade you pick decides how long the tube survives its environment. For most buyers the real call is <strong>304 stainless steel tube<\/strong> versus <strong>316L stainless steel tube<\/strong>, with 304L, 316, and 321 as situational variants.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">The 304 Family<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">304 is the workhorse 18\/8 austenitic grade (18% Cr, 8% Ni, no Mo). It resists corrosion in atmosphere, fresh water, food, and many chemicals, and is the most cost-effective choice for general service. <strong>304L<\/strong> is the low-carbon version (C \u2264 0.03%) for heavy welding without sensitization.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">The 316L Family<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>316L stainless steel tube<\/strong> adds 2\u20133% molybdenum, sharply improving resistance to chlorides and pitting. Its low carbon (\u2264 0.03%) also prevents intergranular corrosion after welding. <strong>316<\/strong> is the higher-carbon variant for non-welded high-temperature service; <strong>321<\/strong> is titanium-stabilized for sustained high-heat zones.<\/p>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-1aa38d3e\"><h3 class=\"uagb-heading-text\">Chemical Composition &amp; Mechanical Properties<\/h3><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">The table below shows why 316L costs more and where it earns the premium.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Property<\/th><th>304 \/ 304L<\/th><th>316L<\/th><th>Note<\/th><\/tr><\/thead><tbody><tr><td>Carbon (C) max<\/td><td>0.08 \/ 0.03<\/td><td>0.03<\/td><td>Lower C = better weld integrity<\/td><\/tr><tr><td>Chromium (Cr)<\/td><td>18.0\u201320.0%<\/td><td>16.0\u201318.0%<\/td><td>Primary corrosion resistance<\/td><\/tr><tr><td>Nickel (Ni)<\/td><td>8.0\u201312.0%<\/td><td>10.0\u201314.0%<\/td><td>Austenite stability<\/td><\/tr><tr><td>Molybdenum (Mo)<\/td><td>\u2014<\/td><td>2.0\u20133.0%<\/td><td>Chloride\/pitting resistance<\/td><\/tr><tr><td>Tensile strength (min)<\/td><td>515 \/ 485 MPa<\/td><td>485 MPa<\/td><td>Both strong enough for most service<\/td><\/tr><tr><td>Yield strength (min)<\/td><td>205 \/ 170 MPa<\/td><td>170 MPa<\/td><td><\/td><\/tr><tr><td>Elongation (min)<\/td><td>40%<\/td><td>40%<\/td><td>Good formability<\/td><\/tr><tr><td>Pitting Resistance Eq. (PREN)<\/td><td>\u2248 20<\/td><td>\u2248 26<\/td><td>Higher = better in chlorides<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-706ff26f\"><h3 class=\"uagb-heading-text\">Which Grade for Which Environment?<\/h3><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Atmosphere, interiors, fresh water, food lines, architecture:<\/strong> 304 or 304L\u2014the majority of decorative, structural, and hygienic jobs.<\/li>\n\n\n\n<li><strong>Marine, coastal, desalination, chemical, pharmaceutical washdown:<\/strong> 316L. The molybdenum is what keeps pitting away where chloride is present.<\/li>\n\n\n\n<li><strong>Sustained high heat (600\u2013850 \u00b0C) with welding:<\/strong> 321 or 316L. Stabilized chemistries resist scaling and sensitization.<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Quick rule:<\/strong> if chloride exposure is real\u2014sea air, road salt, process chlorides\u2014specify 316L. If the environment is benign and the budget is tight, 304 is the rational default.<\/p>\n<\/blockquote>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-de33e116\"><h2 class=\"uagb-heading-text\">Product Specifications<\/h2><\/div>\n\n\n\n    <div class=\"service-list-wrap-tab-row\">\n        <div class=\"service-spec-wrap norange\" style=\"visibility: visible;\">\n            <table cellpadding=\"0\" cellspacing=\"0\" class=\"ts01\" width=\"100%\">\n                <thead>\n                    <tr class=\"b-blue\">\n                        <td>Item <\/td>\n                        <td> Parameters <\/td>\n                    <\/tr>\n                <\/thead>\n                <tbody>\n                    <tr>\n                        <td >Product Name <\/td>\n                        <td> Stainless Steel Tube <\/td>\n                    <\/tr>\n                    <tr>\n                        <td >Standard <\/td>\n                        <td> A269 general service <br\/>\n                            A270 sanitary\/food\/pharma <br\/> \n                            A213\/A249 heat exchangers <br\/>\n                            A312 process pipe, A554 mechanical\/structural <\/td>\n                    <\/tr>\n                    <tr>\n                        <td >Material <\/td>\n                        <td> 304, 304L, 316, 316L, 321 <\/td>\n                    <\/tr>\n                    <tr>\n                        <td >Type <\/td>\n                        <td> Welded, Seamless <\/td>\n                    <\/tr>\n                    <tr>\n                        <td >OD <\/td>\n                        <td> 3 ~ 219.1 mm<\/td>\n                    <\/tr>\n                    <tr>\n                        <td >WT <\/td>\n                        <td> 0.5 ~ 12.7 mm <\/td>\n                    <\/tr>\n                    <tr>\n                        <td >Length <\/td>\n                        <td> Standard length 6m or random length, cut to order<\/td>\n                    <\/tr>\n                    <tr>\n                        <td > End Type <\/td>\n                        <td> Plain end, bevel end <\/td>\n                    <\/tr>\n                    <tr>\n                        <td > HS codes <\/td>\n                        <td> 73064000 (welded) <br\/>\n                             73044100 (seamless) <\/td>\n                    <\/tr>\n                    <tr>\n                        <td > MOQ <\/td>\n                        <td> 15 tons <\/td>\n                    <\/tr>   \n                    <tr>\n                        <td > Delivery Time <\/td>\n                        <td> 10 work days <\/td>\n                    <\/tr>\n                    <tr>\n                        <td > Payment Term <\/td>\n                        <td> T\/T, Paypal <\/td>\n                    <\/tr>\n                    <tr>\n                        <td > Transport Package <\/td>\n                        <td> Standard Seaworthy Packing <\/td>\n                    <\/tr>\n                <\/tbody>\n            <\/table>\n        <\/div>\n    <\/div>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-d9fef713\"><h3 class=\"uagb-heading-text\">The Weight Formula &amp; a Stainless Steel Tube Weight Chart<\/h3><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Because most export quotes are based on weight, you should estimate before contacting a mill. The standard austenitic formula is:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Weight (kg\/m) \u2248 0.02466 \u00d7 WT \u00d7 (OD \u2212 WT)<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">where <strong>OD<\/strong> and <strong>WT<\/strong> are in millimeters.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>OD (mm)<\/th><th>Wall (mm)<\/th><th>Weight (kg\/m)<\/th><th>Rounded<\/th><\/tr><\/thead><tbody><tr><td>12.7<\/td><td>1.0<\/td><td>0.02466 \u00d7 1.0 \u00d7 11.7 = 0.288<\/td><td>0.29<\/td><\/tr><tr><td>25.4<\/td><td>2.0<\/td><td>0.02466 \u00d7 2.0 \u00d7 23.4 = 1.154<\/td><td>1.15<\/td><\/tr><tr><td>50.8<\/td><td>3.0<\/td><td>0.02466 \u00d7 3.0 \u00d7 47.8 = 3.536<\/td><td>3.54<\/td><\/tr><tr><td>76.1<\/td><td>4.0<\/td><td>0.02466 \u00d7 4.0 \u00d7 72.1 = 7.111<\/td><td>7.11<\/td><\/tr><tr><td>114.3<\/td><td>6.0<\/td><td>0.02466 \u00d7 6.0 \u00d7 108.3 = 16.02<\/td><td>16.02<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">This <strong>stainless steel tube weight chart<\/strong> converts a drawing into kilograms, the unit most suppliers quote. Save this formula for your next RFQ.<\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-7387b849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"wp-block-uagb-image uagb-block-6a8eea91 wp-block-uagb-image--layout-default wp-block-uagb-image--effect-static wp-block-uagb-image--align-none\"><figure class=\"wp-block-uagb-image__figure\"><img decoding=\"async\" src=\"https:\/\/wanzhisteels.com\/wp-content\/uploads\/2026\/08\/Elliptical-stainless-steel-tube.jpeg\" alt=\"welded Elliptical stainless steel tube\" class=\"uag-image-28615\" width=\"500\" height=\"500\" title=\"Elliptical stainless steel tube\" loading=\"lazy\" role=\"img\" \/><\/figure><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"wp-block-uagb-image uagb-block-28f9b121 wp-block-uagb-image--layout-default wp-block-uagb-image--effect-static wp-block-uagb-image--align-none\"><figure class=\"wp-block-uagb-image__figure\"><img decoding=\"async\" src=\"https:\/\/wanzhisteels.com\/wp-content\/uploads\/2026\/08\/Stainless-steel-square-tube.jpg\" alt=\"Stainless steel square tube\" class=\"uag-image-28616\" width=\"500\" height=\"500\" title=\"Stainless steel square tube\" loading=\"lazy\" role=\"img\" \/><\/figure><\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-db09ec23\"><h2 class=\"uagb-heading-text\">Applications by Industry of Stainless Steel Tube<\/h2><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Here is how specs typically land by sector.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Oil &amp; Gas \/ Petrochemical<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">High-pressure, high-temperature, and sour-service lines lean on seamless tube and A213\/A249 heat-exchanger tube, with 316L where chlorides are present. Integrity, traceability, and MTC-backed testing are non-negotiable.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Food, Beverage &amp; Pharmaceutical (Hygienic)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Sanitary lines use <strong>A270<\/strong> tube with controlled Ra and conditioned weld beads. A dairy plant in the Middle East once switched a filling line from a generic welded tube to certified A270 316L with Ra \u2264 0.8 \u00b5m; CIP cycle times dropped, bacterial counts stabilized, and the line passed audit on the first pass instead of the third.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Chemical &amp; Marine<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Anywhere chloride is present\u2014coastal plants, desalination, shipboard systems\u2014<strong>316L stainless steel tube<\/strong> is the baseline. An offshore platform in the North Sea had originally installed 304 in a splash-zone handrail system; within two years pitting forced a full replacement. The re-spec to 316L, with its molybdenum-driven PREN of ~26, has now survived more than a decade of salt spray.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Energy &amp; Heat Exchangers<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Boilers, condensers, and exchangers use A213 (seamless) and A249 (welded) tube where thermal cycling and thin walls demand consistent metallurgy.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Structural, Architectural &amp; Automotive<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Visible and load-bearing members use A554 square, rectangular, and round tube in 304 or 316 with polished or brushed finishes; automotive adds EGR coolers, exhaust sections, and precision instrument lines.<\/p>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-df3a9450\"><h2 class=\"uagb-heading-text\">Stainless Steel Tube Standards &amp; Specifications<\/h2><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">The ASTM standards below are the ones B2B buyers meet most often. Match the standard to the job before you discuss price.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>ASTM Standard<\/th><th>Product Form<\/th><th>Primary Application<\/th><th>Typical Grades<\/th><\/tr><\/thead><tbody><tr><td>A269<\/td><td>Seamless \/ welded austenitic tube<\/td><td>General service, instrumentation, utility, low\/high temp<\/td><td>304, 304L, 316, 316L<\/td><\/tr><tr><td>A270<\/td><td>Seamless \/ welded sanitary tube<\/td><td>Food, dairy, beverage, pharma (Ra targets)<\/td><td>304, 304L, 316, 316L<\/td><\/tr><tr><td>A312<\/td><td>Seamless \/ welded pipe (NPS\/Sch)<\/td><td>High-temp &amp; general corrosive process piping<\/td><td>304, 304L, 316, 316L<\/td><\/tr><tr><td>A213<\/td><td>Seamless tube<\/td><td>Boilers, superheaters, heat-exchanger tubes<\/td><td>304, 316, 321<\/td><\/tr><tr><td>A249<\/td><td>Welded tube<\/td><td>Boilers, superheaters, heat exchangers, condensers<\/td><td>304, 316<\/td><\/tr><tr><td>A554<\/td><td>Welded mechanical tube<\/td><td>Architectural, structural, decorative (round\/square\/rect)<\/td><td>304, 316<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">A common error is assuming A269 is &#8220;sanitary&#8221;\u2014it is not. A269 is general-service tubing; if your line touches food or pharma, specify <strong>A270<\/strong> with defined Ra and weld-bead conditioning. Likewise, A312 is pipe dimensioned by NPS and schedule, not tube OD.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"has-ast-global-color-2-color has-text-color has-link-color wp-elements-ffaaae2bc895e190697cb166b958db7c wp-block-paragraph\"><strong>Looking for process pipe in NPS dimensions?<\/strong> Our <a href=\"\/fa\/stainless-steel-pipe\/\" target=\"_blank\" rel=\"noopener\" title=\"\">stainless steel pipe<\/a> and <a href=\"\/fa\/seamless-stainless-steel-pipe\/\" target=\"_blank\" rel=\"noopener\" title=\"\">seamless stainless steel pipe<\/a> pages cover schedule-rated options in the same grades.<\/p>\n<\/blockquote>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-7387b849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"wp-block-uagb-image uagb-block-bef0908a wp-block-uagb-image--layout-default wp-block-uagb-image--effect-static wp-block-uagb-image--align-none\"><figure class=\"wp-block-uagb-image__figure\"><img decoding=\"async\" src=\"https:\/\/wanzhisteels.com\/wp-content\/uploads\/2026\/08\/Rectangular-stainless-steel-pipe.jpg\" alt=\"Rectangular stainless steel pipe\" class=\"uag-image-28617\" width=\"500\" height=\"500\" title=\"Rectangular stainless steel pipe\" loading=\"lazy\" role=\"img\" \/><\/figure><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"wp-block-uagb-image uagb-block-5e4f8a96 wp-block-uagb-image--layout-default wp-block-uagb-image--effect-static wp-block-uagb-image--align-none\"><figure class=\"wp-block-uagb-image__figure\"><img decoding=\"async\" src=\"https:\/\/wanzhisteels.com\/wp-content\/uploads\/2026\/08\/Stainless-steel-circular-welded-tube.jpg\" alt=\"Stainless steel circular welded tube\" class=\"uag-image-28618\" width=\"500\" height=\"500\" title=\"Stainless steel circular welded tube\" loading=\"lazy\" role=\"img\" \/><\/figure><\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-653c3d0a\"><h2 class=\"uagb-heading-text\">How to Choose the Right Stainless Steel Tube<\/h2><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Selection is a four-step process. Follow it and your RFQ comes back unambiguous.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Step 1 \u2014 Define the Service Condition<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Write down fluid, pressure, temperature, and the corrosives present (especially chlorides). This single list decides grade and wall.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Step 2 \u2014 Pick the Grade<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Use the 304\/316L logic above. Benign environment \u2192 304\/304L. Chloride or chemical \u2192 316L. High sustained heat with welding \u2192 321 or 316L.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Step 3 \u2014 Select Standard, Route &amp; Size<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Map the job to a standard (A269\/A270\/A312\/A213\/A249\/A554), choose seamless or welded, and state OD + wall in mm (not NPS). Confirm shape for structural jobs.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Step 4 \u2014 Specify Surface, Test &amp; Docs<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">State finish (pickled, bright annealed, polished Ra), required tests (hydrostatic, eddy current, UT), and documentation (EN 10204 3.1 MTC, third-party inspection).<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">RFQ Checklist Template<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Copy this into your inquiry so suppliers quote the same thing:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Standard &amp; edition (e.g., ASTM A270)<\/li>\n\n\n\n<li>Grade (e.g., TP316L)<\/li>\n\n\n\n<li>Route (seamless \/ welded-ERW)<\/li>\n\n\n\n<li>OD \u00d7 wall \u00d7 length (mm)<\/li>\n\n\n\n<li>Quantity (pcs \/ meters \/ kg)<\/li>\n\n\n\n<li>Surface &amp; Ra target<\/li>\n\n\n\n<li>Required tests<\/li>\n\n\n\n<li>MTC type &amp; inspection (SGS\/BV)<\/li>\n\n\n\n<li>Packing &amp; Incoterms<\/li>\n\n\n\n<li>Target price basis (see per-kg section)<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"has-ast-global-color-2-color has-text-color has-link-color wp-elements-ac17bf0fa5b107d9524c4684e8a9643e wp-block-paragraph\"><strong>Ready to turn this checklist into a real quote?<\/strong> Send us your spec and we will return a priced, standards-matched offer\u2014<a href=\"#ds-open-popup-1\" title=\"\">Request a Quote<\/a>.<\/p>\n<\/blockquote>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-22869406\"><h2 class=\"uagb-heading-text\">Stainless Steel Tube Price Factors<\/h2><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">What Drives the Price<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Grade:<\/strong> 316L costs more than 304 because of nickel and molybdenum content; 321 and 316 sit above 304.<\/li>\n\n\n\n<li><strong>OD and wall:<\/strong> Small OD and very thin or very thick walls raise conversion cost; mid-range sizes are most economical.<\/li>\n\n\n\n<li><strong>Surface finish:<\/strong> Pickled is cheapest; bright annealed and polished (especially low-Ra sanitary) add cost.<\/li>\n\n\n\n<li><strong>Route:<\/strong> Seamless typically costs more than welded for the same size due to the billet and drawing process.<\/li>\n\n\n\n<li><strong>Volume &amp; lead time:<\/strong> Full-container or mill-run quantities earn better per-kg pricing than small mixed lots; urgent splits cost more.<\/li>\n\n\n\n<li><strong>Alloy indices:<\/strong> Nickel and molybdenum spot prices shift the base every week, so confirm validity dates on any quote.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">How to Get an Accurate Quote<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Specify per-kg FOB or CIF with a validity window and attach your RFQ checklist. A vague &#8220;send me 316L tube price&#8221; returns a meaningless number; a precise spec\u2014grade, OD \u00d7 wall, route, finish, quantity, Incoterm\u2014returns a budgetable number.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"has-ast-global-color-2-color has-text-color has-link-color wp-elements-c1469de7fb53a62c17411571fc9634f0 wp-block-paragraph\"><strong>Want a transparent per-Ton figure for your exact spec?<\/strong> Our team prices by grade, OD, surface, and batch size\u2014start with <a href=\"#ds-open-popup-1\" title=\"\">Request a Quote<\/a>.<\/p>\n<\/blockquote>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-2a3311a5\"><h2 class=\"uagb-heading-text\">Why Source From a Chinese Export Trader<\/h2><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">China&#8217;s supply chain offers breadth of grades, fast mill access, and competitive conversion cost. Trust comes from process, not proximity: a trader who provides heat-traceable MTCs, arranges SGS\/BV, honors Incoterms, and documents HS codes turns a distant purchase into a controlled, auditable transaction.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Building a long-term supply relationship?<\/strong> Compare our <a href=\"\/fa\/304-stainless-steel\/\">304 stainless steel<\/a> and <a href=\"\/fa\/316l-stainless-steel\/\">316L stainless steel<\/a> programs, then <a href=\"\/fa\/request-a-quote\/\">Request a Quote<\/a> with your RFQ checklist attached.<\/p>\n<\/blockquote>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-b2fbea8b\" id=\"Why-choose-us\"><h3 class=\"uagb-heading-text\">Why choose wanzhi?<\/h3><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Wanzhi Steel Co., Ltd. Suppliers offer:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Customized solutions: customized profiles (round, rectangular, square, or oval) and sequined finishes (pickling\u3001polishing).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Timely delivery: fast delivery, as fast as within a week.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Competitive pricing: bulk discounts available for orders over 20 tons.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Professional logistics support: ocean-safe packaging with moisture barrier and steel strapping to prevent damage.<\/p>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-08964514\"><h2 class=\"uagb-heading-text\">Our Certificates<\/h2><\/div>\n\n\n\t\t\t\t\t<div\n\t\t\t\t\t\tclass=\"wp-block-uagb-image-gallery uagb-block-ce40e477\"\n\t\t\t\t\t\tstyle=\"\"\n\t\t\t\t\t>\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"spectra-image-gallery spectra-image-gallery__layout--carousel\">\n\t\t\t\t\t\t\t\t<div class=\"uagb-slick-carousel uagb-block-ce40e477\">\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"spectra-image-gallery__media-wrapper\" data-spectra-gallery-image-id=\"1998\">\n\t\t\t\t\t\t\t<div class=\"spectra-image-gallery__media spectra-image-gallery__media--carousel\">\n\t\t\t\t<picture>\n\t\t\t\t\t<source media=\"(min-width: 1024px)\" srcset=\"https:\/\/wanzhisteels.com\/wp-content\/uploads\/2024\/04\/ISO45001-en.jpeg\">\n\t\t\t\t\t<source media=\"(min-width: 768px)\" srcset=\"https:\/\/wanzhisteels.com\/wp-content\/uploads\/2024\/04\/ISO45001-en-745x1024.jpeg\">\n\t\t\t\t\t<img decoding=\"async\" class=\"spectra-image-gallery__media-thumbnail spectra-image-gallery__media-thumbnail--carousel\" src=\"https:\/\/wanzhisteels.com\/wp-content\/uploads\/2024\/04\/ISO45001-en-218x300.jpeg\" alt=\"ISO45001-en\" loading=\"lazy\" \/>\n\t\t\t\t<\/picture>\n\t\t\t\t<div class=\"spectra-image-gallery__media-thumbnail-blurrer\"><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"spectra-image-gallery__media-thumbnail-caption-wrapper spectra-image-gallery__media-thumbnail-caption-wrapper--overlay\">\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"spectra-image-gallery__media-thumbnail-caption spectra-image-gallery__media-thumbnail-caption--overlay\">\n\t\t\t\t\tISO 45001\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<div class=\"spectra-image-gallery__media-wrapper\" data-spectra-gallery-image-id=\"1997\">\n\t\t\t\t\t\t\t<div class=\"spectra-image-gallery__media spectra-image-gallery__media--carousel\">\n\t\t\t\t<picture>\n\t\t\t\t\t<source media=\"(min-width: 1024px)\" srcset=\"https:\/\/wanzhisteels.com\/wp-content\/uploads\/2024\/04\/ISO14001-en.jpeg\">\n\t\t\t\t\t<source media=\"(min-width: 768px)\" srcset=\"https:\/\/wanzhisteels.com\/wp-content\/uploads\/2024\/04\/ISO14001-en-745x1024.jpeg\">\n\t\t\t\t\t<img decoding=\"async\" class=\"spectra-image-gallery__media-thumbnail spectra-image-gallery__media-thumbnail--carousel\" src=\"https:\/\/wanzhisteels.com\/wp-content\/uploads\/2024\/04\/ISO14001-en-218x300.jpeg\" alt=\"ISO14001-en\" loading=\"lazy\" \/>\n\t\t\t\t<\/picture>\n\t\t\t\t<div class=\"spectra-image-gallery__media-thumbnail-blurrer\"><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"spectra-image-gallery__media-thumbnail-caption-wrapper spectra-image-gallery__media-thumbnail-caption-wrapper--overlay\">\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"spectra-image-gallery__media-thumbnail-caption spectra-image-gallery__media-thumbnail-caption--overlay\">\n\t\t\t\t\tISO 14001\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<div class=\"spectra-image-gallery__media-wrapper\" data-spectra-gallery-image-id=\"1996\">\n\t\t\t\t\t\t\t<div class=\"spectra-image-gallery__media spectra-image-gallery__media--carousel\">\n\t\t\t\t<picture>\n\t\t\t\t\t<source media=\"(min-width: 1024px)\" srcset=\"https:\/\/wanzhisteels.com\/wp-content\/uploads\/2024\/04\/ISO9001-en.jpeg\">\n\t\t\t\t\t<source media=\"(min-width: 768px)\" srcset=\"https:\/\/wanzhisteels.com\/wp-content\/uploads\/2024\/04\/ISO9001-en-745x1024.jpeg\">\n\t\t\t\t\t<img decoding=\"async\" class=\"spectra-image-gallery__media-thumbnail spectra-image-gallery__media-thumbnail--carousel\" src=\"https:\/\/wanzhisteels.com\/wp-content\/uploads\/2024\/04\/ISO9001-en-218x300.jpeg\" alt=\"ISO9001-en\" loading=\"lazy\" \/>\n\t\t\t\t<\/picture>\n\t\t\t\t<div class=\"spectra-image-gallery__media-thumbnail-blurrer\"><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"spectra-image-gallery__media-thumbnail-caption-wrapper spectra-image-gallery__media-thumbnail-caption-wrapper--overlay\">\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"spectra-image-gallery__media-thumbnail-caption spectra-image-gallery__media-thumbnail-caption--overlay\">\n\t\t\t\t\tISO 9001\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<div class=\"spectra-image-gallery__media-wrapper\" data-spectra-gallery-image-id=\"12853\">\n\t\t\t\t\t\t\t<div class=\"spectra-image-gallery__media spectra-image-gallery__media--carousel\">\n\t\t\t\t<picture>\n\t\t\t\t\t<source media=\"(min-width: 1024px)\" srcset=\"https:\/\/wanzhisteels.com\/wp-content\/uploads\/2025\/04\/SGS-shandongwanzhi1.jpg\">\n\t\t\t\t\t<source media=\"(min-width: 768px)\" srcset=\"https:\/\/wanzhisteels.com\/wp-content\/uploads\/2025\/04\/SGS-shandongwanzhi1-723x1024.jpg\">\n\t\t\t\t\t<img decoding=\"async\" class=\"spectra-image-gallery__media-thumbnail spectra-image-gallery__media-thumbnail--carousel\" src=\"https:\/\/wanzhisteels.com\/wp-content\/uploads\/2025\/04\/SGS-shandongwanzhi1-212x300.jpg\" alt=\"SGS-shandongwanzhi(1)\" loading=\"lazy\" \/>\n\t\t\t\t<\/picture>\n\t\t\t\t<div class=\"spectra-image-gallery__media-thumbnail-blurrer\"><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"spectra-image-gallery__media-thumbnail-caption-wrapper spectra-image-gallery__media-thumbnail-caption-wrapper--overlay\">\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"spectra-image-gallery__media-thumbnail-caption spectra-image-gallery__media-thumbnail-caption--overlay\">\n\t\t\t\t\tSGS Shandong Wanzhi\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<div class=\"spectra-image-gallery__media-wrapper\" data-spectra-gallery-image-id=\"12854\">\n\t\t\t\t\t\t\t<div class=\"spectra-image-gallery__media spectra-image-gallery__media--carousel\">\n\t\t\t\t<picture>\n\t\t\t\t\t<source media=\"(min-width: 1024px)\" srcset=\"https:\/\/wanzhisteels.com\/wp-content\/uploads\/2025\/04\/SGS-zhengzhouwanzhi1.jpg\">\n\t\t\t\t\t<source media=\"(min-width: 768px)\" srcset=\"https:\/\/wanzhisteels.com\/wp-content\/uploads\/2025\/04\/SGS-zhengzhouwanzhi1-725x1024.jpg\">\n\t\t\t\t\t<img decoding=\"async\" class=\"spectra-image-gallery__media-thumbnail spectra-image-gallery__media-thumbnail--carousel\" src=\"https:\/\/wanzhisteels.com\/wp-content\/uploads\/2025\/04\/SGS-zhengzhouwanzhi1-212x300.jpg\" alt=\"SGS-zhengzhouwanzhi(1)\" loading=\"lazy\" \/>\n\t\t\t\t<\/picture>\n\t\t\t\t<div class=\"spectra-image-gallery__media-thumbnail-blurrer\"><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"spectra-image-gallery__media-thumbnail-caption-wrapper spectra-image-gallery__media-thumbnail-caption-wrapper--overlay\">\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"spectra-image-gallery__media-thumbnail-caption spectra-image-gallery__media-thumbnail-caption--overlay\">\n\t\t\t\t\tSGS Zhengzhou Wanzhi\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-7387b849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:20%\">\n<div class=\"wp-block-uagb-image uagb-block-b1dc0861 wp-block-uagb-image--layout-default wp-block-uagb-image--effect-static wp-block-uagb-image--align-none\"><figure class=\"wp-block-uagb-image__figure\"><img decoding=\"async\" src=\"https:\/\/wanzhisteels.com\/wp-content\/uploads\/2026\/04\/icon_Manufacturer.png\" alt=\"\" class=\"uag-image-27091\" width=\"111\" height=\"111\" title=\"icon_Manufacturer\" loading=\"lazy\" role=\"img\" \/><\/figure><\/div>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-0258d5d8\"><h3 class=\"uagb-heading-text\">Manufacturer<\/h3><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:60%\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-7387b849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"wp-block-uagb-image uagb-block-f0efcf22 wp-block-uagb-image--layout-default wp-block-uagb-image--effect-static wp-block-uagb-image--align-none\"><figure class=\"wp-block-uagb-image__figure\"><img decoding=\"async\" src=\"https:\/\/wanzhisteels.com\/wp-content\/uploads\/2026\/04\/icon_7x24-Hour-service.png\" alt=\"\" class=\"uag-image-27092\" width=\"111\" height=\"111\" title=\"icon_7x24 Hour service\" loading=\"lazy\" role=\"img\" \/><\/figure><\/div>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-e397aaf9\"><h3 class=\"uagb-heading-text\">7*24 Service<\/h3><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"wp-block-uagb-image uagb-block-52c744c8 wp-block-uagb-image--layout-default wp-block-uagb-image--effect-static wp-block-uagb-image--align-none\"><figure class=\"wp-block-uagb-image__figure\"><img decoding=\"async\" src=\"https:\/\/wanzhisteels.com\/wp-content\/uploads\/2026\/04\/icon_Competitive-prices.png\" alt=\"\" class=\"uag-image-27093\" width=\"111\" height=\"111\" title=\"icon_Competitive prices\" loading=\"lazy\" role=\"img\" \/><\/figure><\/div>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-5bee67fb\"><h3 class=\"uagb-heading-text\">Discounted<\/h3><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"wp-block-uagb-image uagb-block-e33b33b6 wp-block-uagb-image--layout-default wp-block-uagb-image--effect-static wp-block-uagb-image--align-none\"><figure class=\"wp-block-uagb-image__figure\"><img decoding=\"async\" src=\"https:\/\/wanzhisteels.com\/wp-content\/uploads\/2026\/04\/icon_Customizable.png\" alt=\"\" class=\"uag-image-27094\" width=\"111\" height=\"111\" title=\"icon_Customizable\" loading=\"lazy\" role=\"img\" \/><\/figure><\/div>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-c9b21c10\"><h3 class=\"uagb-heading-text\">Customizable<\/h3><\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:20%\">\n<div class=\"wp-block-uagb-image uagb-block-9312ad17 wp-block-uagb-image--layout-default wp-block-uagb-image--effect-static wp-block-uagb-image--align-none\"><figure class=\"wp-block-uagb-image__figure\"><img decoding=\"async\" src=\"https:\/\/wanzhisteels.com\/wp-content\/uploads\/2026\/04\/icon_Trustworthy.png\" alt=\"\" class=\"uag-image-27095\" width=\"111\" height=\"111\" title=\"icon_Trustworthy\" loading=\"lazy\" role=\"img\" \/><\/figure><\/div>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-d3ab6229\"><h3 class=\"uagb-heading-text\">Trustworthy<\/h3><\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-d9048a08\"><h2 class=\"uagb-heading-text\">Customer Affirmation<\/h2><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><img decoding=\"async\" src=\"https:\/\/wanzhisteels.com\/wp-content\/uploads\/2025\/03\/Customer-reviews-wanzhi.jpg\" alt=\"Customer reviews wanzhi\"><\/p>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-1557f951\"><h2 class=\"uagb-heading-text\">Contact us<\/h2><\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-7387b849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:60%\">\n<p class=\"wp-block-paragraph\"><strong>Company<\/strong>: Erqi District, Zhengzhou City, Henan Province, China<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Factory<\/strong>: Binzhou City, Shandong Province, ChinaList item<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>E-mail<\/strong>: info04@wanzhisteel.com<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>WhatsApp<\/strong>: +86 18736065220<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Website<\/strong>: https:\/\/wanzhisteels.com<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:40%\">\n<div class=\"wp-block-uagb-image alignleft uagb-block-6e35aa32 wp-block-uagb-image--layout-default wp-block-uagb-image--effect-static wp-block-uagb-image--align-left\"><figure class=\"wp-block-uagb-image__figure\"><img decoding=\"async\" src=\"https:\/\/wanzhisteels.com\/wp-content\/uploads\/2025\/04\/86-18736065220-WhatsApp-300x300.jpg\" alt=\"86 18736065220 WhatsApp\" class=\"uag-image-11618\" width=\"245\" height=\"245\" title=\"86 18736065220 WhatsApp\" loading=\"lazy\" role=\"img\" \/><\/figure><\/div>\n<\/div>\n<\/div>\n\n\n\n<p class=\"has-ast-global-color-2-color has-text-color has-link-color wp-elements-4a135ca1c6d9b7149fcd9e53c7c0584a wp-block-paragraph\"><strong>Hot Tags:<\/strong> SS <a href=\"https:\/\/en.wikipedia.org\/wiki\/Tube_(fluid_conveyance)\" target=\"_blank\" rel=\"noopener nofollow\" title=\"tube\">tube<\/a> supplier, <a href=\"https:\/\/en.wikipedia.org\/wiki\/Stainless_steel\" target=\"_blank\" rel=\"noopener nofollow\" title=\"\u0641\u0648\u0644\u0627\u062f \u0636\u062f \u0632\u0646\u06af\">\u0641\u0648\u0644\u0627\u062f \u0636\u062f \u0632\u0646\u06af<\/a> <a href=\"https:\/\/en.wikipedia.org\/wiki\/Pipe\" target=\"_blank\" rel=\"noopener nofollow\" title=\"pipe\">pipe<\/a>, seamless stainless steel tube, 304\/316L stainless steel tube manufacturers, factory, price<\/p>\n\n\n\n<div class=\"wp-block-uagb-container uagb-layout-flex uagb-block-4c827724 alignwide uagb-is-root-container\">\n<div class=\"wp-block-uagb-buttons uagb-buttons__outer-wrap uagb-btn__default-btn uagb-btn-tablet__default-btn uagb-btn-mobile__default-btn uagb-block-21f65335\"><div class=\"uagb-buttons__wrap uagb-buttons-layout-wrap\">\n<div data-aos= \"fade-right\" data-aos-duration=\"400\" data-aos-delay=\"0\" data-aos-easing=\"ease\" data-aos-once=\"true\" class=\"wp-block-uagb-buttons-child uagb-buttons__outer-wrap uagb-block-f718b67a wp-block-button\"><div class=\"uagb-button__wrapper\"><a class=\"uagb-buttons-repeater wp-block-button__link\" aria-label=\"\" href=\"https:\/\/wanzhisteels.com\/fa\/316l-stainless-steel-seamless-pipe\/\" rel=\"follow noopener\" target=\"_self\" role=\"button\"><span class=\"uagb-button__icon uagb-button__icon-position-before\"><svg xmlns=\"https:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 448 512\" aria-hidden=\"true\" focussable=\"false\"><path d=\"M447.1 256C447.1 273.7 433.7 288 416 288H109.3l105.4 105.4c12.5 12.5 12.5 32.75 0 45.25C208.4 444.9 200.2 448 192 448s-16.38-3.125-22.62-9.375l-160-160c-12.5-12.5-12.5-32.75 0-45.25l160-160c12.5-12.5 32.75-12.5 45.25 0s12.5 32.75 0 45.25L109.3 224H416C433.7 224 447.1 238.3 447.1 256z\"><\/path><\/svg><\/span><div class=\"uagb-button__link\">316l stainless steel seamless pipe<\/div><\/a><\/div><\/div>\n\n\n\n<div data-aos= \"fade-left\" data-aos-duration=\"400\" data-aos-delay=\"0\" data-aos-easing=\"ease\" data-aos-once=\"true\" class=\"wp-block-uagb-buttons-child uagb-buttons__outer-wrap uagb-block-9e0b7cac wp-block-button\"><div class=\"uagb-button__wrapper\"><a class=\"uagb-buttons-repeater wp-block-button__link\" aria-label=\"\" href=\"#\" rel=\"follow noopener\" target=\"_self\" role=\"button\"><div class=\"uagb-button__link\">stainless steel<\/div><span class=\"uagb-button__icon uagb-button__icon-position-after\"><svg xmlns=\"https:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 448 512\" aria-hidden=\"true\" focussable=\"false\"><path d=\"M438.6 278.6l-160 160C272.4 444.9 264.2 448 256 448s-16.38-3.125-22.62-9.375c-12.5-12.5-12.5-32.75 0-45.25L338.8 288H32C14.33 288 .0016 273.7 .0016 256S14.33 224 32 224h306.8l-105.4-105.4c-12.5-12.5-12.5-32.75 0-45.25s32.75-12.5 45.25 0l160 160C451.1 245.9 451.1 266.1 438.6 278.6z\"><\/path><\/svg><\/span><\/a><\/div><\/div>\n<\/div><\/div>\n<\/div>\n\n\n\n<div class=\"wpcf7 no-js\" id=\"wpcf7-f1387-o1\" lang=\"zh-CN\" dir=\"ltr\" data-wpcf7-id=\"1387\">\n<div class=\"screen-reader-response\"><p role=\"status\" aria-live=\"polite\" aria-atomic=\"true\"><\/p> <ul><\/ul><\/div>\n<form action=\"\/fa\/wp-json\/wp\/v2\/posts\/28595#wpcf7-f1387-o1\" method=\"post\" class=\"wpcf7-form init\" aria-label=\"\u7559\u8a00\u8868\u5355\" novalidate=\"novalidate\" data-status=\"init\" data-trp-original-action=\"\/fa\/wp-json\/wp\/v2\/posts\/28595#wpcf7-f1387-o1\">\n<fieldset class=\"hidden-fields-container\"><input type=\"hidden\" name=\"_wpcf7\" value=\"1387\" \/><input type=\"hidden\" name=\"_wpcf7_version\" value=\"6.1.6\" \/><input type=\"hidden\" name=\"_wpcf7_locale\" value=\"zh_CN\" \/><input type=\"hidden\" name=\"_wpcf7_unit_tag\" value=\"wpcf7-f1387-o1\" \/><input type=\"hidden\" name=\"_wpcf7_container_post\" value=\"0\" \/><input type=\"hidden\" name=\"_wpcf7_posted_data_hash\" value=\"\" \/>\n<\/fieldset>\n<div class=\"wpcf7-turnstile cf-turnstile\" data-sitekey=\"0x4AAAAAACnNGNQrco6AXsKM\" data-response-field-name=\"_wpcf7_turnstile_response\"><\/div>\n\n<div class=\"connection-wpcf7-box\">\n\t<div class=\"connection-message-box\">\n\t\t<p><label class=\"connection-message-lab\">CONTACT US<\/label>\n\t\t<\/p>\n\t\t<div class=\"connection-message-tips\">\n\t\t\t<div class=\"connection-message-specify\">\n\t\t\t\t<p>Please specify your requirement by referring to the following aspects:\n\t\t\t\t<\/p>\n\t\t\t<\/div>\n\t\t\t<p><span class=\"connection-message-no\">1<\/span>What kind of solution will meet your demand? (Key point)\n\t\t\t<\/p>\n\t\t\t<p><span class=\"connection-message-no\">2<\/span>What kind of material and expected end product are you planning to have? (Right solution begins from material and product)\n\t\t\t<\/p>\n\t\t\t<p><span class=\"connection-message-no\">3<\/span>When is the project supposed to be running? (Key info for A-Z project programming)\n\t\t\t<\/p>\n\t\t\t<p><span class=\"connection-message-no\">4<\/span>Budget for machinery purchasing? (Key info for right model)\n\t\t\t<\/p>\n\t\t\t<p><span class=\"connection-message-no\">5<\/span>Points that you really focus on. (Customized service from our project consultant)\n\t\t\t<\/p>\n\t\t<\/div>\n\t<\/div>\n\t<div class=\"connection-form-box\">\n\t\t<div class=\"connection-form-input\">\n\t\t\t<div class=\"wpc7-form-row wpc7-lab-left wpc7-form-lab\">\n\t\t\t\t<p><span class=\"wpcf7-form-control-wrap\" data-name=\"your-name\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-text wpcf7-validates-as-required\" autocomplete=\"name\" aria-required=\"true\" aria-invalid=\"false\" placeholder=\"Name(required)\" value=\"\" type=\"text\" name=\"your-name\" \/><\/span>\n\t\t\t\t<\/p>\n\t\t\t<\/div>\n\t\t\t<div class=\"wpc7-form-row wpc7-lab-right wpc7-form-lab\">\n\t\t\t\t<p><span class=\"wpcf7-form-control-wrap\" data-name=\"your-email\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-email wpcf7-validates-as-required wpcf7-text wpcf7-validates-as-email\" autocomplete=\"email\" aria-required=\"true\" aria-invalid=\"false\" placeholder=\"Email(required)\" value=\"\" type=\"email\" name=\"your-email\" \/><\/span>\n\t\t\t\t<\/p>\n\t\t\t<\/div>\n\t\t\t<div class=\"wpc7-form-row wpc7-lab-left wpc7-form-lab\">\n\t\t\t\t<p><span class=\"wpcf7-form-control-wrap\" data-name=\"tel-whatapp\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-tel wpcf7-text wpcf7-validates-as-tel lab-whatapp\" aria-invalid=\"false\" placeholder=\"Whatapp(optional)\" value=\"\" type=\"tel\" name=\"tel-whatapp\" \/><\/span>\n\t\t\t\t<\/p>\n\t\t\t<\/div>\n\t\t\t<div class=\"wpc7-form-row wpc7-lab-right wpc7-form-lab\">\n\t\t\t\t<p><span class=\"wpcf7-form-control-wrap\" data-name=\"text-Country\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-text wpcf7-validates-as-required\" aria-required=\"true\" aria-invalid=\"false\" placeholder=\"Country(required)\" value=\"\" type=\"text\" name=\"text-Country\" \/><\/span>\n\t\t\t\t<\/p>\n\t\t\t<\/div>\n\t\t\t<div class=\"wpc7-lab-row wpc7-form-lab\">\n\t\t\t\t<p><span class=\"wpcf7-form-control-wrap\" data-name=\"text-Company\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-text\" aria-invalid=\"false\" placeholder=\"Company(optional)\" value=\"\" type=\"text\" name=\"text-Company\" \/><\/span>\n\t\t\t\t<\/p>\n\t\t\t<\/div>\n\t\t<\/div>\n\t\t<div class=\"wpc7-form-msg\">\n\t\t\t<p><span class=\"wpcf7-form-control-wrap\" data-name=\"your-message\"><textarea cols=\"40\" rows=\"10\" maxlength=\"2000\" class=\"wpcf7-form-control wpcf7-textarea wpcf7-validates-as-required\" aria-required=\"true\" aria-invalid=\"false\" placeholder=\"Message (required):Fill in the information according to the tips.\" name=\"your-message\"><\/textarea><\/span>\n\t\t\t<\/p>\n\t\t<\/div>\n\t\t<div class=\"wpc7-form-button-submit\">\n\t\t\t<p><input class=\"wpcf7-form-control wpcf7-submit has-spinner button-submit\" type=\"submit\" value=\"SEND\" \/>\n\t\t\t<\/p>\n\t\t<\/div>\n\t<\/div>\n<\/div><div class=\"wpcf7-response-output\" aria-hidden=\"true\"><\/div>\n<input type=\"hidden\" name=\"trp-form-language\" value=\"fa\"\/><\/form>\n<\/div>\n\n\n\n\n<div class=\"wp-block-uagb-container uagb-block-26bc5818 alignfull uagb-is-root-container\"><div class=\"uagb-container-inner-blocks-wrap\"><\/div><\/div>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-9e13e57e\"><h2 class=\"uagb-heading-text\">Related Products<\/h2><\/div>\n\n\n\n\t\t\t<div class=\"wp-block-uagb-post-carousel uagb-post-grid  uagb-post__image-position-top uagb-post__image-enabled uagb-block-c1c9c871     uagb-post__arrow-outside uagb-slick-carousel uagb-post__items uagb-post__columns-4 is-carousel uagb-post__columns-tablet-2 uagb-post__columns-mobile-1\" data-total=\"5\" style=\"\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t<article class=\"uagb-post__inner-wrap\">\t\t\t\t\t\t\t\t<div class='uagb-post__image'>\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/wanzhisteels.com\/fa\/stainless-steel-tube\/\" target=\"_self\" rel=\"bookmark noopener noreferrer\"><img decoding=\"async\" width=\"480\" height=\"360\" src=\"https:\/\/wanzhisteels.com\/wp-content\/uploads\/2026\/08\/Stainless-steel-tube-Circular-tube-elliptical-tube-rectangular-tube-square-tube.jpg\" class=\"attachment-large size-large\" alt=\"Stainless steel tube Circular tube, elliptical tube, rectangular tube, square tube\" srcset=\"https:\/\/wanzhisteels.com\/wp-content\/uploads\/2026\/08\/Stainless-steel-tube-Circular-tube-elliptical-tube-rectangular-tube-square-tube.jpg 480w, https:\/\/wanzhisteels.com\/wp-content\/uploads\/2026\/08\/Stainless-steel-tube-Circular-tube-elliptical-tube-rectangular-tube-square-tube-300x225.jpg 300w, https:\/\/wanzhisteels.com\/wp-content\/uploads\/2026\/08\/Stainless-steel-tube-Circular-tube-elliptical-tube-rectangular-tube-square-tube-16x12.jpg 16w\" sizes=\"(max-width: 480px) 100vw, 480px\" \/>\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<h4 class=\"uagb-post__title uagb-post__text\">\n\t\t\t\t<a href=\"https:\/\/wanzhisteels.com\/fa\/stainless-steel-tube\/\" target=\"_self\" rel=\"bookmark noopener noreferrer\">Stainless Steel Tube<\/a>\n\t\t\t<\/h4>\n\t\t\t\t\t\t<div class='uagb-post__text uagb-post-grid-byline'>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\n\t\t\t\t\t\t\t\t\t<\/article>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<article class=\"uagb-post__inner-wrap\">\t\t\t\t\t\t\t\t<div class='uagb-post__image'>\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/wanzhisteels.com\/fa\/316l-stainless-steel-seamless-pipe\/\" target=\"_self\" rel=\"bookmark noopener noreferrer\"><img decoding=\"async\" width=\"480\" height=\"360\" src=\"https:\/\/wanzhisteels.com\/wp-content\/uploads\/2026\/08\/What-Is-316L-Stainless-Steel-Seamless-Pipe.jpg\" class=\"attachment-large size-large\" alt=\"What Is 316L Stainless Steel Seamless Pipe\" srcset=\"https:\/\/wanzhisteels.com\/wp-content\/uploads\/2026\/08\/What-Is-316L-Stainless-Steel-Seamless-Pipe.jpg 480w, https:\/\/wanzhisteels.com\/wp-content\/uploads\/2026\/08\/What-Is-316L-Stainless-Steel-Seamless-Pipe-300x225.jpg 300w, https:\/\/wanzhisteels.com\/wp-content\/uploads\/2026\/08\/What-Is-316L-Stainless-Steel-Seamless-Pipe-16x12.jpg 16w\" sizes=\"(max-width: 480px) 100vw, 480px\" \/>\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<h4 class=\"uagb-post__title uagb-post__text\">\n\t\t\t\t<a href=\"https:\/\/wanzhisteels.com\/fa\/316l-stainless-steel-seamless-pipe\/\" target=\"_self\" rel=\"bookmark noopener noreferrer\">316L Stainless Steel Seamless Pipe<\/a>\n\t\t\t<\/h4>\n\t\t\t\t\t\t<div class='uagb-post__text uagb-post-grid-byline'>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\n\t\t\t\t\t\t\t\t\t<\/article>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<article class=\"uagb-post__inner-wrap\">\t\t\t\t\t\t\t\t<div class='uagb-post__image'>\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/wanzhisteels.com\/fa\/astm-a312-316l-stainless-steel-pipe\/\" target=\"_self\" rel=\"bookmark noopener noreferrer\"><img decoding=\"async\" width=\"480\" height=\"360\" src=\"https:\/\/wanzhisteels.com\/wp-content\/uploads\/2026\/07\/ASTM-A312-316L-stainless-steel-pipe-for-chemical-industry-ASTM-A312-316L-stainless-steel-pipe-supplier.jpg\" class=\"attachment-large size-large\" alt=\"ASTM A312 316L stainless steel pipe for chemical industry ASTM A312 316L stainless steel pipe supplier\" srcset=\"https:\/\/wanzhisteels.com\/wp-content\/uploads\/2026\/07\/ASTM-A312-316L-stainless-steel-pipe-for-chemical-industry-ASTM-A312-316L-stainless-steel-pipe-supplier.jpg 480w, https:\/\/wanzhisteels.com\/wp-content\/uploads\/2026\/07\/ASTM-A312-316L-stainless-steel-pipe-for-chemical-industry-ASTM-A312-316L-stainless-steel-pipe-supplier-300x225.jpg 300w, https:\/\/wanzhisteels.com\/wp-content\/uploads\/2026\/07\/ASTM-A312-316L-stainless-steel-pipe-for-chemical-industry-ASTM-A312-316L-stainless-steel-pipe-supplier-16x12.jpg 16w\" sizes=\"(max-width: 480px) 100vw, 480px\" \/>\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<h4 class=\"uagb-post__title uagb-post__text\">\n\t\t\t\t<a href=\"https:\/\/wanzhisteels.com\/fa\/astm-a312-316l-stainless-steel-pipe\/\" target=\"_self\" rel=\"bookmark noopener noreferrer\">ASTM A312 316L stainless steel pipe<\/a>\n\t\t\t<\/h4>\n\t\t\t\t\t\t<div class='uagb-post__text uagb-post-grid-byline'>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\n\t\t\t\t\t\t\t\t\t<\/article>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<article class=\"uagb-post__inner-wrap\">\t\t\t\t\t\t\t\t<div class='uagb-post__image'>\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/wanzhisteels.com\/fa\/316-stainless-steel-sheet\/\" target=\"_self\" rel=\"bookmark noopener noreferrer\"><img decoding=\"async\" width=\"480\" height=\"360\" src=\"https:\/\/wanzhisteels.com\/wp-content\/uploads\/2026\/07\/316-stainless-steel-sheet-manufacturer.jpg\" class=\"attachment-large size-large\" alt=\"316 stainless steel sheet manufacturer\" srcset=\"https:\/\/wanzhisteels.com\/wp-content\/uploads\/2026\/07\/316-stainless-steel-sheet-manufacturer.jpg 480w, https:\/\/wanzhisteels.com\/wp-content\/uploads\/2026\/07\/316-stainless-steel-sheet-manufacturer-300x225.jpg 300w, https:\/\/wanzhisteels.com\/wp-content\/uploads\/2026\/07\/316-stainless-steel-sheet-manufacturer-16x12.jpg 16w\" sizes=\"(max-width: 480px) 100vw, 480px\" \/>\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<h4 class=\"uagb-post__title uagb-post__text\">\n\t\t\t\t<a href=\"https:\/\/wanzhisteels.com\/fa\/316-stainless-steel-sheet\/\" target=\"_self\" rel=\"bookmark noopener noreferrer\">316 stainless steel sheet<\/a>\n\t\t\t<\/h4>\n\t\t\t\t\t\t<div class='uagb-post__text uagb-post-grid-byline'>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\n\t\t\t\t\t\t\t\t\t<\/article>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<article class=\"uagb-post__inner-wrap\">\t\t\t\t\t\t\t\t<div class='uagb-post__image'>\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/wanzhisteels.com\/fa\/304l-stainless-steel-bar\/\" target=\"_self\" rel=\"bookmark noopener noreferrer\"><img decoding=\"async\" width=\"480\" height=\"360\" src=\"https:\/\/wanzhisteels.com\/wp-content\/uploads\/2026\/06\/304L-stainless-steel-bright-bar-manufacturer-304L-stainless-steel-bar-for-chemical-industry.jpg\" class=\"attachment-large size-large\" alt=\"304L stainless steel bright bar manufacturer 304L stainless steel bar for chemical industry\" srcset=\"https:\/\/wanzhisteels.com\/wp-content\/uploads\/2026\/06\/304L-stainless-steel-bright-bar-manufacturer-304L-stainless-steel-bar-for-chemical-industry.jpg 480w, https:\/\/wanzhisteels.com\/wp-content\/uploads\/2026\/06\/304L-stainless-steel-bright-bar-manufacturer-304L-stainless-steel-bar-for-chemical-industry-300x225.jpg 300w, https:\/\/wanzhisteels.com\/wp-content\/uploads\/2026\/06\/304L-stainless-steel-bright-bar-manufacturer-304L-stainless-steel-bar-for-chemical-industry-16x12.jpg 16w\" sizes=\"(max-width: 480px) 100vw, 480px\" \/>\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<h4 class=\"uagb-post__title uagb-post__text\">\n\t\t\t\t<a href=\"https:\/\/wanzhisteels.com\/fa\/304l-stainless-steel-bar\/\" target=\"_self\" rel=\"bookmark noopener noreferrer\">304L stainless steel bar<\/a>\n\t\t\t<\/h4>\n\t\t\t\t\t\t<div class='uagb-post__text uagb-post-grid-byline'>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\n\t\t\t\t\t\t\t\t\t<\/article>\n\t\t\t\t\t\t\t\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Stainless Steel Tube Outer Diameter(OD): 3~219.1 mm Wall thickness (WT):\u00a00.5~12.7 mm Manufacturing: Seamless or Welded What Is a Stainless Steel Tube? A stainless steel tube is a precision hollow section defined by outside diameter and wall thickness. That fact shapes everything downstream: which fittings you use, how you calculate pressure rating, and how you price [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":28611,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"header.entry-header.ast-no-thumbnail.ast-no-title {\ndisplay:none;\n}\nnav.navigation.post-navigation {\n    display: none;\n}\nli#uagb-tabs__tab0 {\n    margin: 0;\n}\n.ast-single-related-posts-container {\n    display: none;\n}\n\nh1.uagb-heading-text {\n    font-size: 30px;\n}","site-sidebar-layout":"right-sidebar","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[102,103],"tags":[232],"class_list":["post-28595","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-products","category-stainless-steel","tag-stainless-steel-tube"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.0.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"Specify stainless steel tube by grade, size &amp; ASTM standard. 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