... , ASME B16.36,DIN 86341-2000, materialCarbon steel(ASTM A105, Q235,A350LF2,A350LF3,)Stainless steel(ASTM A182 F304, F304L,F316,F316L,F321,F347 ... , A182, F43, A276 S32750,A705 631,632,A961, A484, Alloy steel(ASTM A694 F42,F46,F52,F56,F60,F65,F70, A182 ... F12,F11,F22,F5,F9,F91,F1ECT)qualificationISO9001 API CEapplicationPetroleum, chemical, machinery, electric ...