Manufacturers & Suppliers of ASTM A182 Duplex Steel S32205 WNRF Weldneck Flange Series A, 36\" ASME B16.47 Class 150# Weldneck Flanges Series A, ASME SA182 2205 Duplex WNRF Welding Neck Flanges Series A, ANSI B16.5 WNRF, DIN 1.4462 Weld Neck Flange, UNS S32205 WNRF Flange.