... ,GOST 2.SIZE:1/2"-48" 3.type: forged forged flange-A105standard: ANSI B16.5 Material: A105 Size:1/2"-40 ... of kinds of carbon steel,such as DIN flange,JIS flange.,ANSI flange,UNI flange,BS flange,EN1092-1 flange etc,also we can supply according to ... treatment:transparent/Yellow/Black anti-rust paint,tranparent oil forged flange-astm,din,jis,gost,gb