... requirementsThird party inspectionBV, SGS, TUV or any other inspection company arranged by clients FLANGESProductswelding neck flange, slip on flange, ... blind flange, socket weld flange, threaded flange, lap joint flange, plate flange, reducing flange, spectacle blind flange, ... type1/2''-24'' Flat Face, Raised Face, Ring Joint Face, Lap Joint Face, Male Face, Female Face, Tongue & Groove ...