... steel different kinds of flanges with carbon steel or stainless steel Flange Introduction: Size: from 1/2" to 80"( ... dn15 to dn2000)Materials: carbon steel or stainless steelASTM A105, SS400,ST37.2, ST35.3, ASTM A182 ... preventing oil, spray paint (black, yellow), hot galvanization, Electric galvanization or colored electroplate, powder coating and so on.Varieties: threaded flange ...