... .unit weight:1kg-100kg 4.This part name crankshaft,used on automobile. 1.forging crankshaft 2.material:42CrMo,40Cr,45# .3.unit weight ... : 1kg-100kg4.This part name crankshaft,used on automobile.5 ... with many kind,also can follow your advise.Thanks. forged crankshaft