Blind flange 1.Material :SS400,A105 ,Q235 ect. 2.Size:DN15-DN2000 3.Standard:ANSI,ASTM ... ,MSS,JIS,DIN,EN Carbon steel forged ASTM A105 Blind flange We started to product flanges from 1986.With ... Size1/2-78 inch (DN15-DN2000)4. MaterialCarbon Steel Material: A105,SS400,SF440 RST37.2,S235JRG2,P250GH,C22.8 ect.5 ... .Supply Capacity700 tons per month Carbon steel forged ASTM A105 Blind flange