carbon steel ANSI flange 1) Standard:ANSI, DIN, EN1092-1, ... WN, SO, PL, BL, THRD, LAP-JOINT, SW carbon steel ANSI flangeThe welding neck flange is normally referred to as ... it can be assembled without welding, explaining its use inlow pressure services at ordinary atmospheric temperatures and in ... : Free Forging, Mould Forging, Upset Forging.Main Material:Carbon Steel,ASTM A 105, ASTM A 350 LF1, LF2 CL1 ...