... forgingDie F 4.OEM Carbon Steel Auto Hook 1.Auto Hook Material a)carbon steel SA234 WPB, ... a)Antirust oil b)painting(black yellow blue) c) hot galvanized, electrical galvanized d) epoxy coating ... DN50005. Process a)free forging, Die Forging b)casting c) plate cutting6.Typea)Flat, Slip on, Blind, ... Neck, Threaded, Lapped Socket welding etc b)Orifice, c) Figure & Blind, Swivel,long welding neck flanges d ...