Discover top-quality ASTM A182 F44 WNRF Flanges, expertly fabricated as Weld Neck, Raise Face in UNS 31254 (254SMO) Duplex Stainless Steel. These ANSI B16.5 standard flanges are available in 3-inch (DN80) size, 300 LB (PN50) pressure rating, and SCH 80 specification.