... High Quality & Reliability 5. Self Adapting Frequency induction auto parts hardening machine Heat Treatment like annealing, normalizing, quenching, tempering. ... , piston pin, chain wheel, aluminum wheel, valve, rock arm shaft, semi drive shaft, small shaft and fork.3. Electric ... lathe deck and guide rail.5. Various hardware metal parts and machined parts, such as big shaft, gear (chain wheel), camshaft ...