... , high frequency quenching ,heat treatment , such as: crankshaft, connecting rod, piston pin, camshaft, valves, transmission of a variety of gears, a variety ... spline shafts, drive axle, a variety of small shaft crank pin, a variety of rocker, rocker shaft and other high- ... hammer, Pliers, Wrench.3) Hydraulic components such as: plunger of piston pump, rotor of rotor pump , the commutation of the valve ...