ASTM A312 Stainless Steel Pipe
Product Description
ASTM A312 is a standard for austenitic stainless steel seamless and welded pipes developed by the American Society for Testing and Materials (ASTM). It is mainly used in high temperature, high pressure and corrosive media environments, covering general industrial scenarios.
ASTM A312 stainless steel pipe specifications include austenitic stainless steels such as TP304/304L, TP316/316L, TP321 (titanium stabilized), TP347 (niobium stabilized), and UNS numbers such as S30400, S31603, etc. Austenitic structure, non-magnetic, with excellent corrosion resistance, high temperature strength and resistance to intergranular corrosion.
ASTM A312 TP304 stainless steel pipe
ASTM A312 Stainless Steel Pipe Specification
|
Grade |
Carbon (%) |
Chromium (%) |
Nickel (%) |
Molybdenum (%) |
Key Properties |
|
TP304 |
≤0.08 |
18–20 |
8–11 |
- |
General-purpose, resistant to oxidizing media. |
|
TP304L |
≤0.03 |
18–20 |
8–12 |
- |
Low-carbon variant with enhanced resistance to intergranular corrosion. |
|
TP316L |
≤0.03 |
16–18 |
10–14 |
2–3 |
Low-carbon, highly resistant to chloride corrosion (e.g., marine environments). |
|
Standard Specification |
ASTM A312, ASME SA312 |
|
Size |
½ to 6 inch Nominal Bore |
|
Types |
Welded, Seamless, ERW, EFW Supplier and Manufacturer |
|
Wall Thickness |
0.1-60 mm |
|
Length |
Single Random Length 5 to 7 Meter Double Random Length 10-12 Meter |
|
Surface Finish |
Polished, Bright, Annealing, Cold Finish, Pickling |
|
Standard |
DIN, JIS, ASTM, GB, ASME, AISI, AMS, EN, GOST |
|
Manufacturing Shapes |
Round, Box Section, Square, Rectangle |
|
Manufacturing Technology |
Hot, Cold Formed |
|
Technique |
Cold Rolled, Hot Rolled |
A312 Stainless Steel Pipe Vs ASTM A269
ASTM A312 includes welded pipes, while ASTM A269 is mainly seamless pipes, and the latter has higher requirements for surface finish (such as BA grade).
A269 is suitable for medical/food grade high cleanliness scenarios, while A312 is more suitable for general industrial scenarios.
ASTM A312 Vs ASTM A358 Arc Welded Stainless Steel Pipe
ASTM A312 welded pipe uses an automated process, while A358 stainless steel pipe allows manual welding and is suitable for larger diameters or customized needs.
Why Choose GNEE
GNEE supplies ASTM A312 stainless steel pipes with outer diameters of 10.3-1219mm and wall thicknesses of 0.5-50mm (seamless pipes); welded pipes with a maximum diameter of up to 2400mm.
Test requirements: hydrostatic test (depending on pressure level), eddy current testing (welded pipes) or ultrasonic testing (seamless pipes).
If used for ASME B31.1/B31.3 pressure pipes, S2 level non-destructive testing can be provided.
ASTM A312 Stainless Steel Pipe Testing
ASME SA312 Seamless Pipe Supplier In China
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