Manufacturers & Suppliers of ASTM B564 Nickel 201 SORF Slip On Flange, 6\" ASME B16.5 Class 1500# Slip On Flange, ASME SB564 Alloy 201 SORF Slip On Flanges, ANSI B16.5 SORF Flanges, DIN 2.4068 Slip On Flange, GOST ??-2, UNS N02201 SORF Flange, Japanese JIS NW 2201, EN LC-Ni 99.