... ANSI B16.5 A105 1/2" to 24" ASME B16.526"to 80" ASME B16.47TypeWN, SW, FF, PL, BL, RJ, TH ... ,PN40/ Class A, B, C, D, EstandardASME B16.5, ASME B16.47, ASME B16.36,DIN 86341-2000, materialCarbon steel(ASTM A105 ... ,F9,F91,F1ECT)qualificationISO9001 API CEapplicationPetroleum, chemical, machinery, electric ANSI ASME Alloy WN Flange RF A105