... steel, carbon steel and all; 2)Standard:ANSI, DIN, BS,UNI, JIS,SABS Carbon steel forged long welding neck flange 1) material: stainless steel, carbon steel ... -On, Welding Neck flange, Blind flange, Socket Welding flange, Threaded flange, Lap Joint flange ... EN, and customers' drawings for special use; Material Carbon steel, alloy steel, stainless steelPressure RatingsClass 150, 300, 600, 900 ...