... , 304L, 316, 316L, 321 2)Standards: GB, AISI/ASTM, JIS, BS, DIN astm 304 seamless stainless steel pipe1)Grade: 304, 304L, 316 ... , 316L, 321 2)Standards: GB, AISI/ASTM, JIS, BS, DIN Grade(UNS):304/304L; 316/316L; 321 ... .75''Wall Thickness:0.078''-1.2''Standards(Norm):ASTM A312, S312M, ASTM A213, ASTM A269,DIN17440,DIN17224,DIN17458ApplicationChemical and petrochemical industry, Oil ...