Manufacturers & Suppliers of ASTM B564 Incoloy 800HT BLRTJ Blind Flange, 52\" ASME B16.47 Class 300# Blind Flange Series A, ASME SB564 Alloy 800HT BLRTJ Blind Flanges, ANSI B16.5 BLRTJ, DIN 1.4859/1.4876 Blind Flange, GOST ??670, UNS N08811 BLRTJ Flange, Japanese JIS NCF 800HT, BS NA 15(HT), EN X8NiCrAlTi32-21.