... 10Out Diameter50mm-1500mmProcessingPrecision hot and cold forging, casting, precision machining and roll ... , hardening and tempering, Nitriding, high frequency treatment, black of oxidation, zincing.FinishingSand ... machine, hobbing machine, grinding machine, gear shaving machine, CNC lathes, precision grinding machine, spline grinding machine, surface grinding machine, horizontal broaching machine ...