... steel 6)Slip-on, Welding Neck, Blind, Threades ,Lap-joint, Socket welding...we have enjoy great reputation in foreign trade Excellent ... , slip on flange, Blind Flange,Threaded Flange,Socket-weld Flange Lap Joint Flange ,Orifice Flange,Spectacle Blind.standard ASME,JIS ... WP317Lpressure 150bls-2500blsface type Flat Face,Raised Face,Ring Joint Face,Lapped Joint Face,Male- Female etc.used in Oil Field, ...