... ,PED,CE/PED. Standard stainless steel flange asme size: from 1/2''_80'' standard:ASME material: stainless qualification: ISO9001 standard stainless steel flange 1/2 ... B16.36,DIN 86341-2000, materialCarbon steel(ASTM A105, Q235,A350LF2,A350LF3,)Stainless steel(ASTM A182 F304, F304L,F316,F316L,F321,F347 ... , A276 S32750,A705 631,632,A961, A484, Alloy steel(ASTM A694 F42,F46,F52,F56,F60,F65,F70, A182 F12 ...