high pressure alloy flange ANSI B16.5 A105 size: 1/2''_80'' standard:ANSI material :alloy qualification: ISO9001, API high pressure alloy flange ANSI B16.5 A105 size: 1/2''_80'' standard:ANSI material :alloy qualification: ISO9001, APIhigh pressure alloy flange ANSI B16.5 A105 1/2" to 24" ASME B16.526"to 80" ASME B16.47TypeWN, SW, FF, PL, BL, RJ, TH, FaceRF, FF, MF, MFM, RJ, TG, RTJ, ...