... Hanger Auto Parts,Casting Part,Hanger 1) Molding process: Loss wax investment casting,Sodium Silicate 2) Material: Carbon steel, Alloy ... Brass, Gray iron, Aluminum, Ductile Iron 3) Molding: Hand made,Wax (suspension) line 4) Possible Heat Treatment: Normalizing ,Annealing, Quenching, Tempering ... / Gears / Pipe fittings...9) Manufacturer certification: ISO9001 (2000) / TS16949 OEM casting parts