TOBO STEEL GROUP CHINA
| Standard | ASTM, ISO |
| Corrosion Resistance | Yes |
| Delivery Time | 15-30 Workdays |
| Package | Standard Export Package |
| Mechanicalproperties | Tensile Strength 520-750 MPa, Yield Strength 205-450 MPa |
| Supply Ability | 10 Ton/Month |
| Product Name | Factory Direct Supply Stainless Steel Welded Pipe 304/316L ASTM A312 Schedule 40 for Sale |
| Pipe | steel tube |
| Surface | 400# |
| Payment Terms | T/T, Western Union |
| Standards | ASTM, DIN, JIS, GB |
| Types | Stainless Steel Welded Pipe |
| Finish | Polished , Mill finished |
| Country Of Origin | MADE IN CHAINA |
| Polish | Bright, Mirror |
| Strength | high |
| Process | ERW , EFW Etc |
| Od Size | 10-100mm |
| Packaging Details | Standard Shipping Package |
| End | Plain End, Beveled End |
| Model Number | Stainless Steel Welded Pipe |
| Certification | ISO/TUV/SGS |
| Place of Origin | Shanghai,China |
| Brand Name | TOBO |
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Product Specification
| Standard | ASTM, ISO | Corrosion Resistance | Yes |
| Delivery Time | 15-30 Workdays | Package | Standard Export Package |
| Mechanicalproperties | Tensile Strength 520-750 MPa, Yield Strength 205-450 MPa | Supply Ability | 10 Ton/Month |
| Product Name | Factory Direct Supply Stainless Steel Welded Pipe 304/316L ASTM A312 Schedule 40 for Sale | Pipe | steel tube |
| Surface | 400# | Payment Terms | T/T, Western Union |
| Standards | ASTM, DIN, JIS, GB | Types | Stainless Steel Welded Pipe |
| Finish | Polished , Mill finished | Country Of Origin | MADE IN CHAINA |
| Polish | Bright, Mirror | Strength | high |
| Process | ERW , EFW Etc | Od Size | 10-100mm |
| Packaging Details | Standard Shipping Package | End | Plain End, Beveled End |
| Model Number | Stainless Steel Welded Pipe | Certification | ISO/TUV/SGS |
| Place of Origin | Shanghai,China | Brand Name | TOBO |
| High Light | Stainless Steel Welded Pipe 304 ，Stainless Steel Welded Pipe 316L ，ASTM A312 Schedule 40 Pipe | ||
Factory Direct Supply Stainless Steel Welded Pipe 304/316L ASTM A312 Schedule 40 for Sale
1. Product Description
Stainless steel welded pipe is a longitudinally or spirally welded tubular product manufactured from cold-rolled or hot-rolled stainless steel strip/coil. The forming process is carried out on continuous roll-forming mills, followed by seam welding using Tungsten Inert Gas (TIG), High-Frequency Induction (HFI), or Submerged Arc Welding (SAW). Post-weld treatment includes solution annealing (for austenitic grades) and pickling/passivation to restore corrosion resistance.
Material grades are designated according to ASTM, EN, JIS, or GB standards. Commonly supplied grades include:
Austenitic: 304, 304L, 316, 316L, 310S, 321
Ferritic: 409L, 430
Martensitic: 410, 420
Duplex: 2205, 2507
Super-austenitic: 904L, 254SMO
2. Product Applications
Coil slitting and edge preparation
Forming (cold rolling) into open tube
Continuous welding (TIG/ERW/SAW) with inert gas shielding
Weld bead trimming or scarfing
Solution annealing (in-line or batch furnace)
Sizing and straightening
Pickling or mechanical descaling
Cutting to length
End finishing and inspection
3. Product Advantages
| Parameter | Range / Tolerance |
| Outer Diameter (OD) – round | 6 mm to 1200 mm (longitudinal); 300 mm to 4800 mm (spiral) |
| Square / Rectangular sizes | 10×10 mm to 600×400 mm |
| Wall Thickness | 0.3 mm to 25 mm (longitudinal); up to 50 mm (spiral) |
| Length | Standard 6 m; custom 1 m to 20 m; coils available |
| OD Tolerance | ±0.5% or ±0.3 mm (whichever is greater) |
| Wall Thickness Tolerance | ±10% of nominal |
| Straightness | ≤1.5 mm per meter, maximum 3 mm over total length |
| Ovality (round pipes) | ≤1% of OD |
| Squareness of ends | ≤1.5° for plain ends |
4.Key Technical Parameters
| Grade | Yield Strength (Rp0.2, MPa) | Tensile Strength (Rm, MPa) | Elongation (A5, %) | Hardness (HB max) |
| 304 | 205 | 520 | 40 | 201 |
| 304L | 170 | 485 | 40 | 201 |
| 316 | 205 | 520 | 40 | 217 |
| 316L | 170 | 485 | 40 | 217 |
| 310S | 205 | 520 | 40 | 217 |
| 409L | 205 | 380 | 20 | 192 |
| 430 | 205 | 420 | 18 | 183 |
| 2205 | 450 | 620 | 25 | 293 |
| 2507 | 550 | 730 | 20 | 310 |
FAQ
1. Are you trading company or manufacturer ? We are manufacturer ,You can see the certification.
2.How long is your delivery time? Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.
3. Do you provide samples ? is it free or extra ? Yes, we could offer the sample for free charge but need pay the cost of freight.
4. What is your terms of payment ? Payment<=1000USD, 100% in advance. Payment>=1000USD, 50% T/T in advance ,balance before shippment.
Company Details
Business Type:
Manufacturer,Agent,Importer,Exporter,Trading Company,Seller
Year Established:
1998
Total Annual:
100000-100000000
Employee Number:
200~300
Ecer Certification：
Verified Supplier
TOBO GROUP sales head offce in Shanghai. We are one of the Professional manufacturers Exporter Pipeline products in China .Our company was established in 1998, the plant covers 550, 000 square meters and a construction area ... TOBO GROUP sales head offce in Shanghai. We are one of the Professional manufacturers Exporter Pipeline products in China .Our company was established in 1998, the plant covers 550, 000 square meters and a construction area ...
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