ASTM A312 TP316L Stainless Steel Seamless Pipe For Power Generation
Oct 28, 2025
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ASTM A312 / A312M seamless, straight-seam welded, and cold-finished austenitic stainless steel pipe suitable for high-temperature and generally corrosive environments.
GNEE is a professional ASTM A312 stainless steel pipe manufacturer and supplier, capable of producing a wide range of pipe sizes for heat exchanger systems. GNEE's ASTM A312 TP316L seamless stainless steel pipe is a key material for the power generation industry (such as boilers, heat exchangers, and steam piping). Through piercing and hot/cold rolling processes, it ensures high-pressure bearing capacity. Surface pickling or polishing meets high-cleanliness requirements (e.g., nuclear power systems).
TP316L seamless stainless steel pipe contains molybdenum (2-3%) and low carbon (≤0.03%), significantly improving resistance to chloride corrosion and making it suitable for high-temperature and high-pressure environments. With a tensile strength of ≥485 MPa and a yield strength of ≥170 MPa, it offers both high-temperature stability and low-temperature toughness. Available in outer diameters from 6 to 610 mm and wall thicknesses from 0.5 to 50 mm, it comes with EN 10204 3.1 material certification.
ASTM A312 TP316 / TP316L Stainless Steel Pipe Specifications
316 Stainless Steel Pipes Chemical Composition
Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
316 | min. | – | – | – | – | – | 16.0 | 2.0 | 10.0 | – |
max. | 0.08 | 2.0 | 0.75 | 0.045 | 0.03 | 18.0 | 3.0 | 14.0 | 0.10 | |
Stainless Steel 316 Pipe Mechanical Properties
Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
Rockwell B (HR B) max | Brinell (HB) max | ||||
316 – 316L | 515 | 205 | 40 | 95 | 217 |
Applications
Boiler Systems: Used for superheater and reheater piping, resistant to high-temperature steam corrosion.
Heat Exchangers: Resists chloride ion stress corrosion, extending equipment life.
Nuclear Power Auxiliary Piping: Complies with ASME SA-312 standards, ensuring safe operation.
What is the difference between TP316 and TP316L?
TP316 is derived from the classic "18-8" (TP304) stainless steel by adding molybdenum for enhanced pitting resistance in chloride environments. TP316L is the low carbon version of TP316, in which low carbon content improves sensitization for better welded corrosion resistance.
ASTM A312 TP316L Seamless Pipe Price per ton
| Product/Grade | Specification / Condition | Price Range (USD per ton) |
|---|---|---|
| TP316L Seamless Pipe | Standard OD & wall thickness, solution-annealed | ≈ US$5,500 – 7,000/ton |
| TP316L Seamless Pipe | Larger diameter / heavier wall / export pack | ≈ US$6,000 – 8,000/ton |
Quality Control of 316L Seamless Pipe
Each TP316L pipe is subjected to PMI spectral analysis, 100% eddy current and ultrasonic testing. Before shipment, the size and appearance are rechecked and photographed one by one for filing; Support SGS/TUV sampling reports. The entire process data can be traced to ensure that every batch of goods received by customers has consistent quality and stable performance.
ASTM A312 TP316L Stainless Pipe Packing
A312 Seamless Pipes is sleeved into plastic bag individually, pieces wrapped with water-proof material, bundled with nylon rope. Clear labels are tagged on the outside of the package for easy identification of the quantity and product I.D. Great care is taken during operation and transportation.
A312 Steel Seamless Pipes packing will be according to international standard in bundles strapped by strips then into containers to avoid any damage. Delivery: Within 10-25 days or asap if we have enough stock
ASTM A312 TP316 Stainless Pipe Chemical Composition
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