... size: from 1/2''_80'' standard:ASME material:carbon steel sa-105 flange Size 1/2" to 24" ASME B16.526 ... , 2500Lbs, /PN6,PN10,PN16,PN20,PN25,PN40/ Class A, B, C, D, EstandardASME B16.5, ASME B16.47, ASME B16.36 ... , papermaking, construction, etcSpecial design available as the requirement of customer sa-105 flange