Manufacturers & Suppliers of ASTM B462 Alloy 20 BLRTJ Blind Flange, 42\" ASME B16.47 Class 150# Blind Flange Series A, ASME SB462 20 Alloy BLRTJ Blind Flanges, ANSI B16.5 BLRTJ, DIN 2.4660 Blind Flange, AFNOR Z2NCUD31-20AZ, UNS N08020 BLRTJ Flange, EN NiCr20CuMo.