Manufacturers & Suppliers of ASTM B462 Alloy 20 SORF Slip On Flange, 12\" ASME B16.5 Class 600# Slip On Flange, ASME SB462 20 Alloy SORF Slip On Flanges, ANSI B16.5 SORF Flanges, DIN 2.4660 Slip On Flange, AFNOR Z2NCUD31-20AZ, UNS N08020 SORF Flange, EN NiCr20CuMo.