carbon steel ANSI flange 1) Standard:ANSI, DIN, EN1092-1, JIS, ... . 2) Type: WN, SO, PL, BL, THRD, LAP-JOINT, SW carbon steel ANSI flangeThe welding neck flange is normally referred to ... hazard Process: Free Forging, Mould Forging, Upset Forging.Main Material:Carbon Steel,ASTM A 105, ASTM A 350 LF1, LF2 CL1 ...