... $/pc Seamless Steel Flange ProductsDIN Flanges,ANSI/ASME/ASTM Flanges,JIS Flanges,ISO Flanges, BS Flanges,EN Flanges and ect.Material(Carbon Steel):ASTM ... A182 F304,304L, F316,316L,1Cr18Ni9Ti,0Cr18Ni9Ti,321,18-8(Alloy Steel): ASTM A182 F1, F5a, F9, F11, F12, F22, F91,A182F12 ... A182 F304,304L, F316,316L,1Cr18Ni9Ti,0Cr18Ni9Ti,321,18-8(Alloy Steel): ASTM A182 F1, F5a, F9, F11, F12, F22, F91,A182F12 ...