ISO 9001, PED, GOST, ISO14001, Manufacture License of Special Equipment P. ... and the austenite-ferritic stainless steel pipes. We can provide :(1) GRADES: 304, 304L , 316L , 321, 310S, EN1.4404, EN ... 1.4301, ect.(2) STANDARDS: ASTM A312, A213, A269, etc.(3) ...