Manufacturers & Suppliers of ASTM B564 Inconel 600 SWRF Socket Weld Flange, 3/4\" ASME B16.5 Class 1500# Socket Weld Flanges, ASME SB564 Alloy 600 SWRF Socket Weld Flanges, ANSI B16.5 SWRF, DIN 2.4816 Socket Weld Flange, GOST ????? 28-2,5-1,5, UNS N06600 SWRF Flange, AFNOR NC15FE11M, EN NiCr15Fe, Japanese JIS NCF 600, BS NA 13.