Shaanxi Shangyou Stainless Steel Co., Ltd.
| Payment Terms | L/C,D/A,D/P,T/T,Western Union |
| Manufacturing Process | Flat-Rolled Stock → Forming → Automatic Welding → Heat Treatment → Sizing → Hydro/NDE Testing |
| Product Alias | 316L Welded Pipe / A312 Stainless Pipe / Low Carbon 316 Pipe / Marine Grade Pipe |
| Mechanical Properties | Tensile ≥485 MPa / Yield ≥170 MPa / Elongation ≥35-40% |
| Material Type | Austenitic Stainless Steel (Straight-Seam Welded, Low Carbon, Mo-Alloyed) |
| Packaging Details | Standard seaworthy export packing with bundles, waterproof wrapping, pallets or wooden cases. |
| Delivery Time | 7-15 |
| Product Name | ASTM A312 TP316L Welded Stainless Steel Pipe |
| Key Feature | Low carbon ≤0.035% prevents weld sensitization; 2-3% Mo for pitting resistance; heat treated; hydro/NDE tested |
| Chemical Composition | Cr 16.0-18.0% / Ni 10.0-14.0% / Mo 2.0-3.0% / C ≤ 0.035% / Mn ≤ 2.0% / Si ≤ 1.0% / P ≤ 0.045% / S ≤ 0.030% / Fe Balance |
| Surface Finish | Pickled / Annealed / Bright Annealed (BA) |
| Supply Ability | Stock supply, regular production and custom manufacturing available. |
| Certification | ISO9001 |
| Brand Name | Shangyou |
| Place of Origin | China |
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Product Specification
| Payment Terms | L/C,D/A,D/P,T/T,Western Union | Manufacturing Process | Flat-Rolled Stock → Forming → Automatic Welding → Heat Treatment → Sizing → Hydro/NDE Testing |
| Product Alias | 316L Welded Pipe / A312 Stainless Pipe / Low Carbon 316 Pipe / Marine Grade Pipe | Mechanical Properties | Tensile ≥485 MPa / Yield ≥170 MPa / Elongation ≥35-40% |
| Material Type | Austenitic Stainless Steel (Straight-Seam Welded, Low Carbon, Mo-Alloyed) | Packaging Details | Standard seaworthy export packing with bundles, waterproof wrapping, pallets or wooden cases. |
| Delivery Time | 7-15 | Product Name | ASTM A312 TP316L Welded Stainless Steel Pipe |
| Key Feature | Low carbon ≤0.035% prevents weld sensitization; 2-3% Mo for pitting resistance; heat treated; hydro/NDE tested | Chemical Composition | Cr 16.0-18.0% / Ni 10.0-14.0% / Mo 2.0-3.0% / C ≤ 0.035% / Mn ≤ 2.0% / Si ≤ 1.0% / P ≤ 0.045% / S ≤ 0.030% / Fe Balance |
| Surface Finish | Pickled / Annealed / Bright Annealed (BA) | Supply Ability | Stock supply, regular production and custom manufacturing available. |
| Certification | ISO9001 | Brand Name | Shangyou |
| Place of Origin | China |
Shaanxi Shangyou Stainless Steel Co., Ltd. supplies ASTM A312 TP316L welded stainless steel pipe for global EPC contractors, fabricators, chemical processors, offshore engineers, and equipment manufacturers requiring low-carbon, molybdenum-alloyed austenitic piping with optimized weld corrosion resistance. Produced to ASTM A312/A312M, this specification covers straight-seam welded austenitic stainless steel pipe intended for high-temperature and general corrosive service.
ASTM A312 is the standard specification for seamless and welded austenitic stainless steel pipe, covering sizes from NPS 1/8 to NPS 48. All pipes must be furnished in the heat-treated condition to restore corrosion resistance and mechanical properties. TP316L is the low-carbon variant of TP316, with maximum carbon content of 0.035% compared to TP316's 0.08% . Combined with the 2.0-3.0% molybdenum addition, the low carbon content prevents chromium carbide precipitation (sensitization) in the heat-affected zone during welding while delivering superior pitting and crevice corrosion resistance in chloride-containing environments . The welded pipe is manufactured by an automatic welding process without filler metal addition and must pass either a hydrostatic test or nondestructive electric test.
| Dimension | Specification |
|---|---|
| Product Name | ASTM A312 TP316L Welded Stainless Steel Pipe |
| Product Alias | 316L Welded Pipe / A312 Stainless Pipe / Low Carbon 316 Pipe / Marine Grade Pipe |
| Material Type | Austenitic Stainless Steel (Straight-Seam Welded, Low Carbon, Mo-Alloyed) |
| Key Feature | Low carbon ≤0.035% prevents weld sensitization; 2-3% Mo for pitting resistance; heat treated; hydro/NDE tested |
| Chemical Composition | Cr 16.0-18.0% / Ni 10.0-14.0% / Mo 2.0-3.0% / C ≤ 0.035% / Mn ≤ 2.0% / Si ≤ 1.0% / P ≤ 0.045% / S ≤ 0.030% / Fe Balance |
| Mechanical Properties | Tensile ≥485 MPa / Yield ≥170 MPa / Elongation ≥35-40% |
| Manufacturing Process | Flat-Rolled Stock → Forming → Automatic Welding → Heat Treatment → Sizing → Hydro/NDE Testing |
| Surface Finish | Pickled / Annealed / Bright Annealed (BA) |
| Primary Applications | Chemical Processing / Oil & Gas / Marine & Offshore / Food & Beverage / Pharmaceutical / Welded Piping Systems |
| Parameter | Available Options |
|---|---|
| Product Standard | ASTM A312/A312M, ASME SA-312 |
| UNS Equivalent | UNS S31603 |
| Nominal Pipe Size (NPS) | 1/8″ to 48″ (DN6 to DN1200) per ASME B36.19 |
| Wall Thickness | Schedule 5S, 10S, 40S, 80S, 120S, 160S per ANSI B36.19/B36.10 |
| Length | Single random, double random, or cut-to-length |
| Pipe End | Plain End (PE) / Beveled End (BE) / Threaded |
| Heat Treatment | All material furnished in heat-treated condition |
| Inspection | Hydrostatic Test / Nondestructive Electric Test / Tension Test / Flattening Test / PMI / Chemical Analysis |
| Documents | MTC 3.1 / Inspection Reports / Packing List / Heat Number Traceability |
ASTM A312 TP316L welded pipe is the preferred choice for welded construction in chloride-containing, marine, and chemical environments requiring maximum resistance to weld sensitization and pitting.
Typical applications include:
Key selection considerations: Choose TP316L over TP316 when the pipe will be welded and no post-weld heat treatment is planned—the low carbon content prevents chromium carbide precipitation in the heat-affected zone, preserving intergranular corrosion resistance . While TP316L has slightly lower tensile strength (485 MPa vs 515 MPa for TP316) and yield strength (170 MPa vs 205 MPa) due to the lower carbon content, the weld corrosion resistance advantage makes it the standard choice for welded piping systems . Compared to TP304L, TP316L's molybdenum addition provides superior pitting and crevice corrosion resistance in chloride environments . For sustained elevated-temperature service above 870°C where creep strength is important, TP316H (0.04-0.10% carbon) may be considered.
Shangyou Stainless Steel provides value-added processing including custom cutting, beveling, threading, and end protection.
All pipes are packed with export-standard protection including protective end caps, steel strapping, waterproof wrapping, and wooden pallets or steel frames.
Quality documents include MTC 3.1, inspection reports, packing list, and heat number traceability. Third-party inspection (SGS, TUV, BV) can be arranged upon request.
1. What is ASTM A312 TP316L?
ASTM A312 TP316L is the low-carbon, molybdenum-alloyed variant of 316 stainless steel pipe, with ≤0.035% carbon and 2-3% Mo for weld corrosion resistance.
2. What is the UNS number for TP316L?
UNS S31603.
3. What is the difference between TP316 and TP316L?
TP316 has max 0.08% carbon; TP316L has max 0.035% carbon. TP316L has slightly lower tensile/yield strength but is preferred for welded construction to prevent sensitization .
4. What mechanical properties does TP316L have?
Tensile ≥485 MPa, Yield ≥170 MPa, Elongation ≥35-40% .
5. What is the key advantage of TP316L over TP304L?
TP316L contains 2-3% molybdenum, providing significantly better pitting and crevice corrosion resistance in chloride environments .
6. Is ASTM A312 pipe heat treated?
Yes, all pipes must be furnished in the heat-treated condition.
7. What testing is required for ASTM A312 welded pipe?
Each pipe must pass hydrostatic test or nondestructive electric test, plus tension and flattening tests .
8. What size range does ASTM A312 cover?
NPS 1/8″ to 48″ (DN6 to DN1200) per ASME B36.19 .
9. What documents are provided with delivery?
MTC 3.1, inspection reports, packing list, and heat number traceability.
10. What are typical applications for TP316L welded pipe?
Chemical processing, oil & gas, marine/offshore, food & beverage, pharmaceutical, seawater systems, and welded piping systems requiring corrosion resistance.
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Need ASTM A312 TP316L welded stainless steel pipe for welded chemical, marine, food, or pharmaceutical service? Send requirements including grade, NPS/wall thickness/length, end finish, quantity, and service conditions.
Shangyou Stainless Steel provides custom sizes, processing, and export solutions for global B2B customers.
Company Details
Business Type:
Manufacturer
Year Established:
2022
Total Annual:
>$10 million
Employee Number:
>100
Ecer Certification：
Verified Supplier
About Us Shaanxi Shangyou Stainless Steel Co., Ltd. is a professional stainless steel manufacturer and global supplier specializing in the production and export of stainless steel pipes, sheets, coils, strips, bars, wires, profiles, and nickel alloy products. Our Expertise With exte... About Us Shaanxi Shangyou Stainless Steel Co., Ltd. is a professional stainless steel manufacturer and global supplier specializing in the production and export of stainless steel pipes, sheets, coils, strips, bars, wires, profiles, and nickel alloy products. Our Expertise With exte...
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