Manufacturers & Suppliers of ASTM B462 Alloy 20 BLRF Blind Flanges, 32\" ASME B16.5 Class 150# Blind Flange, ASME SB462 20 Alloy BLRF Blind Flanges, ANSI B16.5 BLRF, DIN 2.4660 Blind Flanges, AFNOR Z2NCUD31-20AZ, UNS N08020 BLRF Flange, EN NiCr20CuMo.