Manufacturers & Suppliers of ASTM B151 Copper Nickel 90/10 SWRF Socket Weld Flange, 1-1/2\" ASME B16.5 Class 900# 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.