... years experience in special fastener fiel Name: metal machinery casting part Ability for the material of this kind of hanger: Grade3 ... ,10.9,12.9,etcCarbon steelGr.B,Gr.C,Gr.D,Gr.36,Gr.58,1010,1015,1016,1020,1045,etcAlloy ... so that you couldavoid lots of risks. metal machinery casting part