... .5, BS4504, DIN2633, EN1092-1 ISO TUV Certificate Forged Steel Flange:Welding Neck Flanges, Slip-on Flanges, Blind , Plate Flanges, Socket Weld ... Flanges, Lap Joint Flanges, Orifice Flanges, Figure 8 Blanks Flange, Anchoring Flange 1. ASME FlangesSTANDARD:ASME B16.5, ASME B16.47,ASME ... ,PN25,PN40,PN50,PN110,PN150, PN260,PN420 Forged Carbon Steel Flange