Shanxi Zhongcheng Metal Co., Ltd.
| Payment Terms | T/T，D/P，D/A，Western Union，PayPal |
| Supply Ability | 10000tons |
| Delivery Time | 15-25days |
| Packaging Details | Wooden pallets, wooden crates, woven bags, etc. |
| Country of Origin | MADE IN CHAINA |
| Brand | Baosteel，TISCO |
| Certifications | ISO/EN 10204 Type 3.1 / 3.2 available |
| Grade | 201 / 202 / 301 / 302 / 303 / 304 / 304L / 305 / 309S / 310S / 316 / 316L / 317 / 317L / 321 / 347 / 409L / 410 / 420 / 430 / 440C / 2205 / 2507 / 630 (17-4PH) |
| MOQ | 100kg |
| Packaging | Wooden Case / Wooden Pallet / Steel Frame / Carton / Woven Bag |
| Supply Capacity | 10000tons |
| Brand Name | Baosteel，TISCO |
| Model Number | 201 / 202 / 301 / 302 / 303 / 304 / 304L / 305 / 309S / 310S / 316 / 316L / 317 / 317L / 321 / 347 / 409L / 410 / 420 / 430 / 440C / 2205 / 2507 |
| Certification | EN 10204 Type 3.1 / 3.2 available |
| Place of Origin | MADE IN CHAINA |
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Product Specification
| Payment Terms | T/T，D/P，D/A，Western Union，PayPal | Supply Ability | 10000tons |
| Delivery Time | 15-25days | Packaging Details | Wooden pallets, wooden crates, woven bags, etc. |
| Country of Origin | MADE IN CHAINA | Brand | Baosteel，TISCO |
| Certifications | ISO/EN 10204 Type 3.1 / 3.2 available | Grade | 201 / 202 / 301 / 302 / 303 / 304 / 304L / 305 / 309S / 310S / 316 / 316L / 317 / 317L / 321 / 347 / 409L / 410 / 420 / 430 / 440C / 2205 / 2507 / 630 (17-4PH) |
| MOQ | 100kg | Packaging | Wooden Case / Wooden Pallet / Steel Frame / Carton / Woven Bag |
| Supply Capacity | 10000tons | Brand Name | Baosteel，TISCO |
| Model Number | 201 / 202 / 301 / 302 / 303 / 304 / 304L / 305 / 309S / 310S / 316 / 316L / 317 / 317L / 321 / 347 / 409L / 410 / 420 / 430 / 440C / 2205 / 2507 | Certification | EN 10204 Type 3.1 / 3.2 available |
| Place of Origin | MADE IN CHAINA | ||
| High Light | Seamless Stainless Steel Square Tubing ，Stainless Steel Square Tubing High Pressure | ||
Seamless stainless steel square tubing is a hollow structural section with four equal sides and no welded seam along its length. It is manufactured by extruding a solid billet of stainless steel into a hollow tube, then forming it into a square shape.
The absence of a weld seam provides superior strength, uniform wall thickness, and excellent performance under high pressure and extreme temperatures. Our seamless square tubing is ideal for critical applications where reliability is paramount.
| Parameter | Details |
|---|---|
| Standard | ASTM A312, A269, A213, EN 10216, JIS G3459 |
| Grades | 304, 304L, 316, 316L, 321, 310S |
| Size (Width x Width) | 10 mm x 10 mm – 150 mm x 150 mm |
| Wall Thickness | 1.0 mm – 10.0 mm |
| Length | 3000 mm, 4000 mm, 6000 mm (custom cut available) |
| Process | Cold drawn or cold rolled seamless |
| Surface Finish | Mill finish, Pickled, Annealed, Polished |
| Element | Grade 304 | Grade 304L | Grade 316 | Grade 316L |
|---|---|---|---|---|
| Carbon (C) | ≤ 0.08 | ≤ 0.03 | ≤ 0.08 | ≤ 0.03 |
| Silicon (Si) | ≤ 1.00 | ≤ 1.00 | ≤ 1.00 | ≤ 1.00 |
| Manganese (Mn) | ≤ 2.00 | ≤ 2.00 | ≤ 2.00 | ≤ 2.00 |
| Phosphorus (P) | ≤ 0.045 | ≤ 0.045 | ≤ 0.045 | ≤ 0.045 |
| Sulfur (S) | ≤ 0.030 | ≤ 0.030 | ≤ 0.030 | ≤ 0.030 |
| Chromium (Cr) | 18.0 – 20.0 | 18.0 – 20.0 | 16.0 – 18.0 | 16.0 – 18.0 |
| Nickel (Ni) | 8.0 – 10.5 | 8.0 – 12.0 | 10.0 – 14.0 | 10.0 – 14.0 |
| Molybdenum (Mo) | — | — | 2.0 – 3.0 | 2.0 – 3.0 |
| Grade | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) |
|---|---|---|---|
| 304 | ≥ 515 | ≥ 205 | ≥ 35 |
| 304L | ≥ 485 | ≥ 170 | ≥ 35 |
| 316 | ≥ 515 | ≥ 205 | ≥ 35 |
| 316L | ≥ 485 | ≥ 170 | ≥ 35 |
Note: The values above are for reference only. Please refer to the mill test certificate for actual data.
| Feature | Seamless Tube | Welded Tube |
|---|---|---|
| Manufacturing | Extruded from solid billet | Formed from strip and welded |
| Weld Seam | None | Present |
| Pressure Rating | Higher | Lower |
| Wall Thickness Consistency | Very consistent | Consistent |
| Strength | Superior | Good |
| Corrosion Resistance at Seam | Uniform | Potential weak point |
| Cost | Higher | Lower |
| Lead Time | Longer | Shorter |
| Best For | High pressure, high temperature, critical applications | Structural, architectural, general purpose |
Seamless stainless steel square tubing is used in demanding applications where reliability is critical:
| Grade | Best For |
|---|---|
| 304 | General high pressure applications, food processing |
| 304L | Welded structures in high pressure systems |
| 316 | Marine, chemical, and chloride environments |
| 316L | Welded structures in corrosive environments |
| 321 | High temperature applications (up to 900°C) |
| 310S | Very high temperature applications (up to 1150°C) |
For quotes, samples, or technical support, please reach out.
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Importer,Exporter,Trading Company,Seller
Year Established:
2010
Total Annual:
20000000-50000000
Employee Number:
50~100
Ecer Certification：
Verified Supplier
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