{"id":28514,"date":"2026-08-05T10:31:08","date_gmt":"2026-08-05T02:31:08","guid":{"rendered":"https:\/\/wanzhisteels.com\/?p=28514"},"modified":"2026-08-05T13:29:30","modified_gmt":"2026-08-05T05:29:30","slug":"316l-stainless-steel-seamless-pipe","status":"publish","type":"post","link":"https:\/\/wanzhisteels.com\/ru\/316l-stainless-steel-seamless-pipe\/","title":{"rendered":"316L Stainless Steel Seamless Pipe"},"content":{"rendered":"
\n\t\t\t\u0434\u043e\u043c<\/a>\n\t\t<\/span>\u00bb<\/span>\n\t\t\t\u043f\u0440\u043e\u0434\u0443\u043a\u0446\u0438\u044f<\/a>\n\t\t<\/span>\u00bb<\/span>\n\t\t\t\u041d\u0435\u0440\u0436\u0430\u0432\u0435\u044e\u0449\u0430\u044f \u0441\u0442\u0430\u043b\u044c<\/a>\n\t\t<\/span>\u00bb<\/span>\n\t\t\t316L Stainless Steel Seamless Pipe\n\t\t<\/span><\/div><\/div><\/div>\n\n\n\n
\n
\n
\"What<\/figure>\n<\/div>\n\n\n\n
\n

316L Stainless Steel Seamless Pipe<\/h1><\/div>\n\n\n\n
\n\n\n\n

Outer Diameter(OD): 6mm \u2013 1219mm<\/p>\n\n\n\n

Wall thickness (WT): 1.0mm \u2013 60mm<\/p>\n\n\n\n

End Type: Plain end, bevel end<\/p>\n\n\n\n

\n
\u041e\u0442\u043f\u0440\u0430\u0432\u0438\u0442\u044c \u0437\u0430\u043f\u0440\u043e\u0441<\/div><\/a><\/div><\/div>\n<\/div><\/div>\n<\/div>\n<\/div>\n\n\n\n
\n
\u041f\u043e\u0434\u0440\u043e\u0431\u043d\u0430\u044f \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f \u043e \u043f\u0440\u043e\u0434\u0443\u043a\u0442\u0435<\/div><\/a><\/div><\/div>\n\n\n\n
Why choose us<\/div><\/a><\/div><\/div>\n<\/div><\/div>\n\n\n\n
\n\n\n\n

What Is 316L Stainless Steel Seamless Pipe?<\/h2><\/div>\n\n\n\n

A 316L stainless steel seamless pipe<\/strong> is a tubular product made from austenitic stainless steel grade TP316L (UNS S31603), produced without a longitudinal weld seam. The “316” denotes the chromium-nickel-molybdenum chemistry; the “L” denotes low carbon<\/em> (\u22640.03% versus \u22640.08% for standard 316).<\/p>\n\n\n\n

The seamless manufacturing route starts with a solid round billet that is heated and pierced into a hollow shell, then elongated and sized by hot rolling, cold rolling, or cold drawing. Because there is no welded joint, the pipe has consistent wall structure and no seam-related weak points \u2014 a key reason it is specified for pressure vessels, heat exchangers, and toxic or hazardous fluid transport.<\/p>\n\n\n\n

Compared with standard 304, the 2\u20133% molybdenum addition in 316L dramatically improves resistance to pitting and crevice corrosion in chloride-containing environments. That single difference is why 316L \u2014 not 304 \u2014 is the default for marine, coastal, and chemical service.<\/p>\n\n\n\n

\n
\n

The Material Designations<\/h3><\/div>\n\n\n\n
\u0421\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u043d\u044b\u0439<\/th>Designation<\/th><\/tr><\/thead>
ASTM \/ ASME<\/td>TP316L<\/td><\/tr>
UNS<\/td>S31603<\/td><\/tr>
EN<\/td>1.4404<\/td><\/tr>
JIS<\/td>SUS316L<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n\n
\n

\u041c\u0435\u0445\u0430\u043d\u0438\u0447\u0435\u0441\u043a\u0438\u0435 \u0441\u0432\u043e\u0439\u0441\u0442\u0432\u0430<\/h3><\/div>\n\n\n\n
Property<\/th>Value<\/th><\/tr><\/thead>
Tensile Strength<\/td>\u2265 485 MPa<\/td><\/tr>
Yield Strength<\/td>\u2265 170 MPa<\/td><\/tr>
Elongation<\/td>\u2265 35%<\/td><\/tr>
Hardness (HRB)<\/td>\u2264 95<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n\n
\n

\u0425\u0438\u043c\u0438\u0447\u0435\u0441\u043a\u0438\u0439 \u0441\u043e\u0441\u0442\u0430\u0432<\/h3><\/div>\n\n\n\n
Element<\/th>Content (%)<\/th><\/tr><\/thead>
Carbon (C)<\/td>\u2264 0.03<\/td><\/tr>
Manganese (Mn)<\/td>\u2264 2.00<\/td><\/tr>
Chromium (Cr)<\/td>16.0\u201318.0<\/td><\/tr>
Nickel (Ni)<\/td>10.0\u201314.0<\/td><\/tr>
Molybdenum (Mo)<\/td>2.00\u20133.00<\/td><\/tr>
Silicon (Si)<\/td>\u2264 1.00<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n<\/div>\n\n\n\n

These values confirm why 316L handles both structural load and corrosive media \u2014 it is strong enough for piping networks yet ductile enough to form, bend, and weld.<\/p>\n\n\n\n

Product Specifications<\/h2><\/div>\n\n\n\n
\n
\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n
\u042d\u043b\u0435\u043c\u0435\u043d\u0442 <\/td>\n Parameters <\/td>\n <\/tr>\n <\/thead>\n
\u041d\u0430\u0437\u0432\u0430\u043d\u0438\u0435 \u043f\u0440\u043e\u0434\u0443\u043a\u0442\u0430 <\/td>\n 316L Stainless Steel Seamless Pipe <\/td>\n <\/tr>\n
\u0421\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u043d\u044b\u0439 <\/td>\n ASTM A312 \/ ASME SA312 <\/td>\n <\/tr>\n
Material <\/td>\n TP316L (UNS S31603, 1.4404) <\/td>\n <\/tr>\n
\u0422\u0438\u043f <\/td>\n Seamless <\/td>\n <\/tr>\n
OD <\/td>\n 1\/4\u2033 \u2013 48\u2033 (10.3mm \u2013 1219mm)<\/td>\n <\/tr>\n
WT <\/td>\n SCH 5S, 10S, 40S, 80S, 160, XXH<\/td>\n <\/tr>\n
\u0414\u043b\u0438\u043d\u0430 <\/td>\n Standard length 6m or random length, cut to order<\/td>\n <\/tr>\n
End Type <\/td>\n Plain end, bevel end <\/td>\n <\/tr>\n
\u041c\u0438\u043d\u0438\u043c\u0430\u043b\u044c\u043d\u044b\u0439 \u043e\u0431\u044a\u0435\u043c \u0437\u0430\u043a\u0430\u0437\u0430 <\/td>\n 15 tons <\/td>\n <\/tr> \n
\u0421\u0440\u043e\u043a \u043f\u043e\u0441\u0442\u0430\u0432\u043a\u0438 <\/td>\n 10 work days <\/td>\n <\/tr>\n
\u0423\u0441\u043b\u043e\u0432\u0438\u044f \u043e\u043f\u043b\u0430\u0442\u044b <\/td>\n T\/T, Paypal <\/td>\n <\/tr>\n
\u0422\u0440\u0430\u043d\u0441\u043f\u043e\u0440\u0442\u043d\u044b\u0439 \u043f\u0430\u043a\u0435\u0442 <\/td>\n \u0421\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u043d\u0430\u044f \u043c\u043e\u0440\u0441\u043a\u0430\u044f \u0443\u043f\u0430\u043a\u043e\u0432\u043a\u0430 <\/td>\n <\/tr>\n <\/tbody>\n <\/table>\n <\/div>\n <\/div>\n\n\n\n

Seamless vs Welded: Which Should You Specify?<\/h2><\/div>\n\n\n\n

Both seamless and welded 316L pipes exist under ASTM A312. The right choice depends on service conditions.<\/p>\n\n\n\n

Factor<\/th>Seamless<\/th>Welded (ERW)<\/th><\/tr><\/thead>
Manufacturing<\/td>Billet pierced & rolled<\/td>Coil formed & longitudinally welded<\/td><\/tr>
Pressure rating<\/td>Higher (no seam)<\/td>Good for many services<\/td><\/tr>
Purity \/ cleanliness<\/td>Superior (no weld zone)<\/td>Weld area needs verification<\/td><\/tr>
Cost<\/td>Higher<\/td>Lower<\/td><\/tr>
Typical use<\/td>High-pressure, hazardous, heat exchangers<\/td>General water, structural, low-risk<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Specify seamless<\/strong> when the line carries hazardous fluids, operates at high pressure\/temperature, or must pass rigorous radiographic or hydrostatic testing. Welded<\/strong> is acceptable for many lower-risk services where budget drives the decision. For most international infrastructure and industrial projects, seamless remains the conservative, defensible choice.<\/p>\n\n\n\n

Common Applications of 316L Seamless Pipe<\/h2><\/div>\n\n\n\n

Chemical Processing<\/h3><\/div>\n\n\n\n

316L is the workhorse for acid storage systems, reactor connections, and process piping that handles chlorides and organic\/inorganic acids. Our guide on 316L Stainless Steel Pipe for Chemical Industry<\/a> breaks down media-specific selection.<\/p>\n\n\n\n

Pharmaceutical & Food & Beverage<\/h3><\/div>\n\n\n\n

The smooth, non-porous surface and corrosion resistance make 316L ideal for purified-water systems, sterile process piping, dairy, brewing, and beverage transfer lines. For broader food-grade selection between 304 and 316, see Stainless Steel for Food Processing<\/a>.<\/p>\n\n\n\n

Marine & Offshore<\/h3><\/div>\n\n\n\n

Seawater cooling systems, shipbuilding, and coastal industrial facilities rely on 316L’s chloride resistance. For projects within 5 km of the coast, 316L is effectively mandatory.<\/p>\n\n\n\n

Water Treatment & Desalination<\/h3><\/div>\n\n\n\n

Reverse-osmosis skids, desalination plants, and municipal water equipment use 316L for long, maintenance-light service life.<\/p>\n\n\n\n

Heat Exchangers & Boilers<\/h3><\/div>\n\n\n\n

Good oxidation resistance at elevated temperature makes 316L suitable for heat-transfer and steam systems.<\/p>\n\n\n\n

\n
\n
\"316L<\/figure>\n<\/div>\n\n\n\n
\n
\"Factory<\/figure>\n<\/div>\n<\/div>\n\n\n\n

How to Choose the Right 316L Seamless Pipe<\/h2><\/div>\n\n\n\n

Use this decision flow:<\/p>\n\n\n\n

    \n
  1. Define the medium<\/strong> \u2014 fresh water, seawater, acid, steam, or hygienic fluid?<\/li>\n\n\n\n
  2. Set the temperature & pressure<\/strong> \u2014 pick schedule accordingly (SCH 40S standard; XXH for high pressure)<\/li>\n\n\n\n
  3. Choose surface finish<\/strong> \u2014 P&A for general; BA\/polished for hygienic or semiconductor<\/li>\n\n\n\n
  4. Confirm standards<\/strong> \u2014 ASTM A312 (US\/export), EN 10216\/10217 (EU), GB\/T 14976 (China)<\/li>\n\n\n\n
  5. Match length & quantity<\/strong> \u2014 6 m \/ 12 m; MOQ typically 10\u201325 tons<\/li>\n<\/ol>\n\n\n\n

    Need complementary forms? We also supply 316 stainless steel sheet<\/a> for tanks <\/a>and cladding, and 304L stainless steel bar<\/a> for machining and fabrication.<\/p>\n\n\n\n

    Pipe Weight & Price Considerations<\/h2><\/div>\n\n\n\n

    Weight Formula<\/h3><\/div>\n\n\n\n

    Weight per meter (kg\/m) \u2248 0.02466 \u00d7 WT(mm) \u00d7 (OD(mm) \u2212 WT(mm))<\/a><\/p>\n\n\n\n

    Example: a 2\u2033 SCH 40S pipe (OD 60.3 mm, WT 3.91 mm) \u2248 0.02466 \u00d7 3.91 \u00d7 56.39 \u2248 5.44 kg\/m<\/strong>.<\/p>\n\n\n\n

    Price Factors<\/h3><\/div>\n\n\n\n

    316L seamless pipe pricing depends on:<\/p>\n\n\n\n