Manufacturers & Suppliers of ASTM B564 Inconel 617 SORF Slip On Flange, 1/2\" ASME B16.5 Class 2500# Slip On Flange, ASME SB564 Alloy 617 SORF Slip On Flanges, ANSI B16.5 SORF Flanges, DIN 2.4663 Slip On Flange, UNS N06617 SORF Flange, Japanese JIS NCF 617.