ASME B16.5 Weld Neck Flange for high-pressure piping systems. Forged carbon steel weld neck flange with tapered hub design for smooth stress distribution. Available in pressure classes 150 lb through 2500 lb, sizes 1/2 to 48 inches, in materials including carbon steel ASTM A105, stainless steel ASTM A182 F304/F316, and alloy steel ASTM A182 F11/F22. Complete range of facing types: raised face, flat face, ring type joint, and tongue and groove. Each flange is 100% pressure tested and certified with material test reports.