we could offer different forging crankshaft, which is mated with engine manufacturer, such as Cummins, Caterpillar, Perkins, Volvo, Yuchai diesel, Wuxi diesel, etc.4 cylinders, 6 cylinders, Rockwell hardness 60, surface roughness Ra.0.3, fillet quenching, intermidiate frequency quenching, Landis grinding machine.