1)Flate Welding Flange 2)Standard:ASME/DIN/JIS/EN/BS 3)PN:6-64(1/2"-64") 4 ... ASME/ASTM Flanges,JIS Flanges,ISO Flanges, BS Flanges,EN Flanges and ect.Material(Carbon Steel):ASTM A105,20#, ... A182 F304,304L, F316,316L,1Cr18Ni9Ti,0Cr18Ni9Ti,321,18-8(Alloy Steel): ASTM A182 F1, F5a, F9, F11, F12, F22 ... A182 F304,304L, F316,316L,1Cr18Ni9Ti,0Cr18Ni9Ti,321,18-8(Alloy Steel): ASTM A182 F1, F5a, F9, F11, F12, ...