Manufacturers & Suppliers of ASTM A182 F304 BLRTJ Blind Flange, 28\" ASME B16.47 Class 400# Blind Flange Series A, ASME SA182 F304 BLRTJ Blind Flanges, ANSI B16.5 BLRTJ, DIN 1.4301 Blind Flange, GOST 08?18?10, UNS S30400 BLRF Flange, EN X5CrNi18-10, Japanese JIS SUS 304, BS 304S31, AFNOR Z7CN18?09.