... . 2) Type: WN, SO, PL, BL, THRD, LAP-JOINT, SW carbon steel ANSI flangeThe welding neck flange is normally referred to as ... Process: Free Forging, Mould Forging, Upset Forging.Main Material:Carbon Steel,ASTM A 105, ASTM A 350 LF1, LF2 CL1/CL2, LF3 CL1/CL2ASTM ... A 694 F42, F46, F52, F56, F60, F65, F70Stainless Steel,ASTM A 182, ANSI 304, 304L, 304H, 304LN, 309S, 309H, 309Cb ...