Manufacturers & Suppliers of ASTM B564 Hastelloy C276 SORF Slip On Flange, 3-1/2\" ASME B16.5 Class 600# Slip On Flange, ASME SB564 Alloy C276 SORF Slip On Flanges, ANSI B16.5 SORF Flanges, DIN 2.4819 Slip On Flange, GOST ??65???, UNS N10276 SORF Flange, Japanese JIS NW 0276, EN NiMo16Cr15W.