Manufacturers & Suppliers of ASTM A182 Duplex Steel S32205 WNRF Weldneck Flange, 10\" WNRF Flanges Sch 40, ASME B16.5 Class 400# Weldneck Flange, ASME SA182 2205 Duplex WNRF Welding Neck Flanges, ANSI B16.5 WNRF, DIN 1.4462 Welding Flange, UNS S32205 WNRF Flange.