Forged Steel Flange: Welding Neck, Slip-on, Blind, Plate flange ANSI B16.5, BS4504, DIN2633, EN1092-1 ISO TUV Certificate Forged Steel Flange:Welding Neck Flanges, Slip-on Flanges, Blind , Plate Flanges, Socket Weld Flanges,Threaded Flanges, Lap Joint Flanges, Orifice Flanges, Figure 8 Blanks Flange, Anchoring Flange 1. ASME FlangesSTANDARD:ASME B16.5, ASME B16.47,ASME B16.48,ASME B16.36,ANSI/ ...