Manufacturers & Suppliers of ASTM B564 Hastelloy C276 BLRF Blind Flange, 6\" ASME B16.5 Class 2500# Blind Flange, ASME SB564 Alloy C276 BLRF Blind Flanges, ANSI B16.5 BLRF, DIN 2.4819 Blind Flange, GOST ??65???, UNS N10276 BLRF Flange, Japanese JIS NW 0276, EN NiMo16Cr15W.