... inspection company arranged by clientsHebei Haiyuan Pipe Fittings Co., Ltd specializes in manufacturing steel buttweld pipe fittings and forged ... flange, blind flange, socket weld flange, threaded flange, lap joint flange, plate flange, reducing flange, spectacle blind flange, loose ... face type1/2''-24'' Flat Face, Raised Face, Ring Joint Face, Lap Joint Face, Male Face, Female Face, Tongue & Groove ...