... of type 4.It is multifunction Forged Flange Carbon Steel flange For forged rings:15000tons/yearFor forged flanges:1000 ... and gas fields. Following the principle of“Sincere Operation,Quality First and Customer Preferential”,our company wholeheartedly welcomes all people ... flange,slip on flange,blind flange Material:carbon steel,stainless steel and alloy steel fange Standard:ANSI,JIS,BS,DIN,UNI,EN, ...