ASME SA 312 / SA 312M covers seamless, welded, and heavily cold worked austenitic stainless steel pipes intended for high-temperature and general corrosive service. For your website, this page can focus on seamless stainless steel pipe supply under this standard.
ASME SA 312 stainless steel seamless pipes are widely used in chemical processing, marine systems, water treatment, food processing, pulp and paper, oil and gas, and industrial piping systems where corrosion resistance, pressure integrity, and reliable performance are required.
Item | Specification |
Standard | ASME SA 312 / ASME SA 312M |
Product Name | Stainless Steel Seamless Pipe |
Product Type | Austenitic stainless steel seamless pipe |
Material Type | Austenitic stainless steel |
Common Grades | TP304, TP304L, TP316, TP316L, TP321, TP347, TP347H, TP310S |
Manufacturing Process | Hot finished / Cold finished |
NPS Range | 1/8" – 24" |
Outside Diameter | 10.3 mm – 609.6 mm |
Wall Thickness | SCH 5S to SCH XXS |
Length | Random length, fixed length, or custom length |
Form | Straight pipe |
Delivery Condition | Solution annealed |
Surface Finish | Annealed and pickled, bright annealed, polished if required |
Ends | Plain end, beveled end |
Marking | Standard, grade, size, schedule, heat number |
Testing | Chemical analysis, tensile test, hardness test, hydrostatic test, nondestructive electric test |
Inspection Documents | MTC, EN 10204 3.1 / 3.2 upon request |
Application | Process piping, marine piping, chemical industry, water treatment, oil and gas |
TP304 / TP304L
TP316 / TP316L
TP321
TP347 / TP347H
TP310S
TP904L
Duplex grades are usually under other standards, not SA 312
Seamless pipe suitable for pressure service
Excellent corrosion resistance
Suitable for high-temperature and general corrosive environments
Wide size and schedule range available
Good weldability for austenitic grades
Full traceability and inspection documentation available

Chemical analysis
Tensile property test
Hardness test
Hydrostatic test
Non-destructive electric test
PMI and ferrite test upon request
EN 10204 3.1 / 3.2 documentation available

Process piping
Marine piping systems
Chemical and petrochemical plants
Water treatment systems
Food and beverage industry
Oil and gas piping
Heat exchanger piping

These stainless steel seamless pipes and tubes are typically packed in seaworthy export packaging to ensure safe transportation and long-distance delivery.
Depending on the product size and customer requirements, the pipes or tubes are bundled with protective straps, packed in wooden cases, plywood cases, or hexagonal bundles, with both ends protected by plastic caps where applicable.
Each package is clearly labeled with grade, size, standard, heat number, and shipment details for full traceability. Waterproof wrapping, woven bags, and anti-rust protection can also be provided to ensure the materials arrive in good condition during ocean shipment and storage.

It is used for high-temperature and corrosive service in industrial piping, chemical processing, marine applications, and water systems.
No. SA 312 covers seamless, welded, and heavily cold worked stainless steel pipe. This product page focuses on seamless pipe supply.
TP304L and TP316L are the most commonly used grades, followed by TP321 and TP347 for elevated temperature service.