Manufacturers & Suppliers of ASTM A182 Super Duplex Steel S32760 WNRF Weldneck Flange, 3\" WNRF Flanges Sch 120, ASME B16.5 Class 900# Weldneck Flange, ASME SA182 2507 Super Duplex WNRF Welding Neck Flanges, ANSI B16.5 WNRF, DIN 1.4462 Welding Flange, UNS S32760 WNRF Flange.