Products include high, medium and low pressure flange etc. Material is 20#,A105,Q235A,12CrlMov,16MnR,15CrMo,321, ... ,321,304,304L,316,316 .All detail as below: StandardsSpecificationsStandardsSpecifications ANSI-B16.5ASTM A105,A182F304,F304LF316, F316LCLASS150(PN20) DN15-1500DINDIN 17100DIN ... T 40kg/cm2 DN50-4001/2"--24" Steel and forging flange