Yuhong Group Co.,Ltd
| Product Name | Stainless Steel Seamless Pipe |
| High Light | ASTM A312 TP316L Stainless Steel Seamless Pipe, EN 1.4404 Steel Seamless Pipe |
| Payment Terms | L/C,T/T |
| Wall Thickness | Schedule 5S to Schedule XXS |
| Delivery Time | 7 DAYS |
| OD | 1/2" to 48" |
| Pipe End | Plain End, Beveled End |
| Length | Single Random, Double Random & Cut Length. |
| Packaging Details | Plywood case,Bundle |
| Material | TP316L / UNS S31603 / EN 1.4404 |
| Standard | ASTM A312/ ASME SA312 |
| Model Number | ASTM A312 TP316L Stainless Steel Seamless Pipe |
| Certification | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008 |
| Brand Name | YUHONG |
| Place of Origin | CHINA |
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Product Specification
| Product Name | Stainless Steel Seamless Pipe | High Light | ASTM A312 TP316L Stainless Steel Seamless Pipe, EN 1.4404 Steel Seamless Pipe |
| Payment Terms | L/C,T/T | Wall Thickness | Schedule 5S to Schedule XXS |
| Delivery Time | 7 DAYS | OD | 1/2" to 48" |
| Pipe End | Plain End, Beveled End | Length | Single Random, Double Random & Cut Length. |
| Packaging Details | Plywood case,Bundle | Material | TP316L / UNS S31603 / EN 1.4404 |
| Standard | ASTM A312/ ASME SA312 | Model Number | ASTM A312 TP316L Stainless Steel Seamless Pipe |
| Certification | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008 | Brand Name | YUHONG |
| Place of Origin | CHINA | ||
| High Light | ASTM A312 TP316 stainless steel pipe ，TP316L seamless annealed pipe ，stainless steel pickled seamless pipe | ||
ASTM A312 TP316/316L UNS S31603 Stainless Steel Seamless Pipe Industry Pipe
Stainless Steel 316L is the industry's ultimate "safe bet"—it balances corrosion resistance, weldability, cost, and global supply so perfectly that it has become the default "Specify and Forget" material for engineers worldwide. 316L has exceptional toughness at cryogenic temperatures (down to -325°F / -196°C), making it the go-to choice for liquid natural gas (LNG) terminals.
The Delivery Condition: Annealed and Pickled (A&P)
This is the standard finishing condition for seamless stainless steel pipes and is crucial for performance:
Annealing (Solution Treatment): The pipe is heated to a controlled temperature range of 1900°F to 2100°F (1040°C to 1150°C) and then rapidly quenched (water cooled). This process dissolves chromium carbides that may have precipitated during forming, softens the metal for ease of installation, eliminates residual stresses, and restores the fully austenitic, non-magnetic microstructure.
Pickling: Following annealing, the pipe is submerged in a chemical solution (usually a mixture of nitric and hydrofluoric acids). This aggressively removes the heavy, black "mill scale" (oxide layer) formed during high-temperature heat treatment, as well as any free iron contamination from the rolling process. It leaves a clean, uniform, matte-silver surface that allows the natural chromium-oxide passive film to form immediately upon exposure to air.
Equivalent Grades of ASTM A312 TP316L Stainless Steel Seamless Pipe
| STANDARD | WERKSTOFF NR. | UNS | JIS | BS | GOST | AFNOR | EN |
| SS 316L | 1.4404 / 1.4435 | S31603 | SUS 316L | 316S11 / 316S13 | 03Ch17N14M3 / 03Ch17N14M2 | Z3CND17‐11‐02 / Z3CND18‐14‐03 | X2CrNiMo17-12-2 / X2CrNiMo18-14-3 |
Chemical Composition of ASTM A312 TP316L Stainless Steel Seamless Pipes
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | Fe |
| SS 316L | 0.035 max | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 16.00 - 18.00 | 2.00 - 3.00 | 10.00 - 14.00 | 68.89 min |
Manufacturing & Testing (Mandatory per ASTM) NDT
| Test |
Requirement
|
|---|---|
| Hydrostatic Test | Each pipe is pressure-tested (or NDT-electrically tested per E213) to minimum required burst pressure. |
| Flattening Test | For welded pipes (though applicable as a supplementary test for seamless). |
| Flange Test | Ensures ductility. |
| Chemical Analysis | Per Heat (Ladle) and Check (Product) analysis. |
| PMI (Positive Material Identification) |
Recommended for lot verification to confirm UNS S31603. |
Applications
Chemical & Petrochemical: Process piping for chlorides, amines, and hot organic acids.
Oil & Gas: Downhole tubing, sour service lines (with NACE restrictions regarding H₂S, though generally acceptable up to limits).
Pharmaceutical & Biotechnology: High-purity steam and WFI (Water for Injection) systems (often with specific surface finish requirements).
Food & Beverage: Dairy processing, brewing, and sanitary piping.
Marine Engineering: Heat exchangers and condenser tubing in coastal plants.
Power Generation: Condenser and feedwater heater tubes (where chloride stress corrosion is a concern).
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Importer,Exporter,Trading Company,Seller,Other
Year Established:
2007
Total Annual:
50M-70M
Employee Number:
50~850
Ecer Certification：
Verified Supplier
Yuhong Group is one of the large scale group company in China, more than 35 years experience in the international market, providing high-quality services to over 3000 customers, end user which like Aramco, Petrobras, Pemex, Petronas, Ecopetro, Petroecuador, …. till now Yuhong Grou... Yuhong Group is one of the large scale group company in China, more than 35 years experience in the international market, providing high-quality services to over 3000 customers, end user which like Aramco, Petrobras, Pemex, Petronas, Ecopetro, Petroecuador, …. till now Yuhong Grou...
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