... steel flange asme 1/2" to 24" ASME B16.526"to 80" ASME B16.47TypeWN, SW, FF, PL, BL, RJ, TH, FaceRF ... ,PN25,PN40/ Class A, B, C, D, EstandardASME B16.5, ASME B16.47, ASME B16.36,DIN 86341-2000, materialCarbon steel(ASTM A105, Q235 ... , etcSpecial design available as the requirement of customer stainless steel flanges