Manufacturers & Suppliers of ASTM B564 Hastelloy B2 WNRF Weldneck Flange Series B, 38\" ASME B16.47 Class 300# Weldneck Flanges Series B, ASME SB564 Alloy B2 WNRF Welding Neck Flanges Series B, ANSI B16.5 WNRF, DIN 2.4617 Weld Neck Flange, UNS N10665 WNRF Flange.
