Professional manufacturer of forged flange in China, ansi b16.5 slip on, weld neck, bland flange(class150-1500). Size: ... Qualification:ISO9001,API,CE size 1/2" to 24" ASME B16.526"to 80" ASME B16.47TypeWNF, SO, SWF, BL, OF,LF,PLFaceRF, FF ... ,PN20,PN25,PN40/ Class A, B, C, D, EstandardASME B16.5, ASME B16.47, ASME B16.36,DIN 86341-2000, DIN2505materialCarbon steel(ASTM A105, Q235,A350LF2 ...