ASME B16.47 large diameter A105 forging flange Types:Welding Neck Flanges Size:DN1000-DN8000 Material:carbon,stainless ,alloy Hebei Hongshuo Pipe Fitting Co.,LtdProduct name WN SO SW TH BL FLANGESizeDN1000--DN8000 and othersTypesSlip-On, Welding Neck flange, Blind flange, Socket Welding flange, Threaded flange, Lap Joint flange and Plate flange etc.Applicable standard GB, ASME , ASTM, MSS ,JIS , ...