... .3) Possible Heat Treatment: Normalizing ,Annealing, Solution, Passivation4) Production machine: Hot die forging presses,Friction press machine,Middle Frequency electric heater, Air hammer ... , rocker), construction machery parts,auto parts, motorcycle parts, electric equipment Parts, hardware tools, scaffold couplers7) Manufacturer certification: ISO9001 (2000) / TS16949 close die forging