Type: Flat welding flange, Butt welding flange, and Blind Flange etc. Material: Carbon Steel, alloy steel, and stainless steel Standard: ANSI, API, ASME, ISO, BS, JPI, GB, HGJ, JB, SYJ Size: 1/2?--48? Nominal Pressure: Pg=2.5, 6, 10, 16, 25, 40, 64,100,160 kg/cm2 Welcome your specific inquiry.