API flange WN/SO/BLIND 1.SCH10~SCH160/STD/SGP/XS/XXS ... A860 WPHY42, WPHY46, WPHY52, WPHY60, WPHY65, WPHY70, P235GH, P265GH, ST35.8, ST37.2, PT370, PT369ALLOY STEELASTM A234 WP1, WP11, WP12, WP22 ... 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, loose flangeSize and ...