Steel forging auto parts Casting SGS audited More than 20 years experience Steel forging auto parts1,Name: Steel forging auto parts;Steel auto parts;Forging auto parts 2,For the similar auto parts,what can we do ?1), Ability for the material of this kind of auto parts: Grade3.6,4.6,4.8,5.6,6.8,8.8,9.8,10.9,12.9,etcCarbon steelGr.B,Gr.C,Gr.D,Gr.36,Gr.58,1010,1015,1016,1020,1045,etcAlloy steel4130, ...