... : Henan China (Mainland)5.lots stock of carbon steel flangeNameCarbon Steel FlangeTypeWN flange,SO flange,T flange,Blind flange,LJ ... ro the customerQuanlityFirst gradeCertificationISO9002,ISO9001,CE certification Our Carbon Steel Flange and Stainless Steel Flange be according to ANSI, DIN, UNI, ... JIS, KS standards. the materials are ASTM A105, ST37, Q235, 20 Steel, S.S 304, 304L,316, 316L ANSI B16.5 / ...