1.Carbon steel flange with different variaties 2.Size: from 1/2"to 80" DN15 TO DN2000 3Materials: carbon steel or stainless 1.Name: carbon steel flange2.Size: from 1/2" to 80"( dn15 to dn2000)3.Materials: carbon steel or stainless steel4.ASTM A105, SS400,ST37.2, ST35.3, ASTM A182 F304/304L/316/316L/321 and so on5.Facing method: rust preventing oil, spray paint (black, yellow), hot galvanization, ...