Manufacturers & Suppliers of ASTM B151 Copper Nickel 90/10 SWRF Socket Weld Flange, 1\" ASME B16.5 Class 1500# Socket Weld Flanges, ASME SB151 Cu Ni 90/10 SWRF Socket Weld Flanges, ANSI B16.5 SWRF, DIN 2.0872 Socket Weld Flange, UNS C70600 SWRF Flange.