Manufacturers & Suppliers of ASTM A182 F304L BLRTJ Blind Flange, 44\" ASME B16.47 Class 400# Blind Flange Series A, ASME SA182 F304L BLRTJ Blind Flanges, ANSI B16.5 BLRTJ, DIN 1.4307 Blind Flange, GOST 03?18?11, UNS S30403 BLRF Flange, EN X2CrNi19-11, Japanese JIS SUS 304L, BS 304S11, AFNOR Z3CN18?10.