... fine quality at positive price.Product speficications:1)Product Name: welding neck flange2)Standard: ANSI, ASME, API , DIN, JIS3) O.D ... : 1/2"--72"4) Material : Carbon Steel, Stainless SteeThe welding neck flange is widely used in the oil or gas ... convenient.Flange Size1/2"-72"TypeWeld Neck, Slip-On, Blind, Socket Weld, Lap Joint, Threaded, Orifice Flange, Swivel Flange, Spectacle Blind ...