... 1/2"to 80" DN15 TO DN2000 Materials: carbon steel or stainless st Name: carbon steel flangeSize: from 1/2" to ... 80"( dn15 to dn2000) Materials: carbon steel or stainless steelASTM A105, SS400,ST37.2, ST35.3, ASTM A182 ... : rust preventing oil, spray paint (black, yellow), hot galvanization, Electric galvanization or colored electroplate, powder coating and so on.Varieties: threaded flange ...