Features: 1) Stainless steel flange and carbon steel flange 2) Standard: ASME, ANSI, API, JIS, JPI, DIN, UNI, BS, AS Product part: BS stainless steel Welding Neck Flange Size1/2" ~ 64"(DN15 mm ~ 1600 mm)MaterialsCarbon steel, Stainless steel and Alloy steel etc.TypeSlip-On, Welding Neck, Blind, Socket Welding, Threaded, Lap Joint and Plate etc.StandardASME, ANSI, API, JIS, JPI, DIN, UNI, ...