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304 ss round tube
Inner Diameter: 3 – 1200mm or customizable
Thickness: 0.1-0.5mm (capillary), ≥ 0.5mm (conventional)
Surface: No.1, 2bB, BA, HL, No.4, No.8
Product Introduce
304 stainless steel round tube is an industrial pipe mainly composed of chromium nickel alloy, with a carbon content of ≤ 0.08%. The grades include 00Cr19Ni10 and S30408, and comply with multiple national standards such as GB9684-88, ASTM, JIS, etc.
Chemical composition
- Core element: Chromium (Cr) 18% -20% → forms a dense oxide film to resist corrosion; Nickel (Ni) 8% -10.5% → enhances ductility and high-temperature stability.
- Low carbon control: Carbon (C) ≤ 0.08% (high-quality products can reach 0.03% -0.06%), significantly reducing the risk of intergranular corrosion.
- Harmful element restrictions: sulfur (S) ≤ 0.03%, phosphorus (P) ≤ 0.035%, to avoid thermal and cold brittleness.
Internal surface treatment grade
| level | Roughness Ra (μm) | Applicable scenarios |
| Pickling | ≤3.2 | Ordinary industrial pipeline |
| Mechanical polishing | ≤0.8 | Food/pharmaceutical pipeline |
| Electropolishing | ≤0.4 | Ultra high purity medium |
304 stainless steel round pipes can be divided into
- 304 (06Cr19Ni10):
- Standard type, suitable for general corrosion-resistant environments.
- 304L (022Cr19Ni10):
- Low carbon type, less prone to intergranular corrosion after welding, suitable for occasions with high welding requirements.
- 304H (07Cr19Ni10):
- High carbon type, better high temperature resistance, suitable for high temperature environments.
Product Parameters
| Item | Parameters |
| Product Name | 304 stainless steel round tube |
| Standard | ASTM, GB/T, JIS, EN, etc. |
| Length | 0.1m – 12m |
| Production Process | Hot rolling, Cold rolling (drawing), Welding |
| MOQ | 10 tons |
| Delivery Time | 20 work days |
| Payment Term | T/T, L/C at sight |
| Transport Package | Standard Seaworthy Packing |
Comparison of parameters for 304 stainless steel round tube
| Nominal diameter (DN) | Corresponding outer diameter (mm) | Common inner diameter (mm) | Wall thickness grade |
| DN15 | 21.3 | 15.3~17.1 | SCH40 |
| DN25 | 33.7 | 27.1~29.3 | SCH40 |
| DN50 | 60.3 | 52.5~54.0 | SCH80 |
| DN100 | 114.3 | 102.3~105.5 | SCH40 |
| DN200 | 219.1 | 202.7~207.1 | SCH10 |
Application scenarios of 304 stainless steel round tube
Industrial equipment and piping systems:
food and beverage, pharmaceutical, chemical, energy.
Architecture and structural engineering:
curtain wall support keel, fire sprinkler system, medical gas pipeline, coastal guardrail/handrail.
High end manufacturing and special equipment:
semiconductors, automobiles, aerospace, laboratory equipment.
Note:
It is strictly prohibited to use 304 pipes in working conditions: Seawater environment, Strong oxidizing acid, Stress corrosion.
Our Certificates
Why choose us?
Wanzhi Steel Co., Ltd. Suppliers offer:
Customized solutions: customized length, inner diameter, wall thickness, production process.
Timely delivery: fast delivery, as fast as within a week.
Competitive pricing: bulk discounts available for orders over 10 tons.
Professional logistics support: ocean-safe packaging with moisture barrier and steel strapping to prevent damage.
Wanzhi Steel’s service advantages:
- We offer full customization options from DN6 to DN1200 (inner diameter accuracy ±0.1mm).
- We offer laboratory testing.
- Also support third-party on-site inspections.
Contact us
Company: Erqi District, Zhengzhou City, Henan Province, China
Factory: Binzhou City, Shandong Province, ChinaList item
E-mail: info04@wanzhisteel.com
WhatsApp: +86 18736065220
Website: https://wanzhisteels.com
Hot Tags: 304 stainless steel tube, SS round tube, 316 SS Steel tube, 304 Stainless Steel seamless pipe for sale, Industrial Materials, manufacturers, suppliers, factory, price
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