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ASTM A312
The standard specification for seamless, welded, and heavily cold worked austenitic stainless steel pipes intended for high-temperature and general corrosive service.
ASTM A312/A312M
ASTM A312 is the most widely referenced standard for austenitic stainless steel pipe. It covers grades TP304, TP304L, TP316, TP316L, TP321, TP347, and many others in sizes NPS 1/8 through NPS 30.
Key Requirements
- Chemical composition per ASTM A312 Table 1
- Tensile and yield strength minimums
- Solution annealing heat treatment
- Hydrostatic or eddy current testing
- Marking and certification