... extensively used for wind power generator, high-speed gear case ,low-speed gear case,metallurgy, rolling mill,oil extraction,mining,chemical ... products for different types of gears, ring gears, gear splined shaft, shaft,gear shaft,and stepped shaft which are made of nickel molybdenum steel, alloy ... steel, stainless steel and carbon steel. The maximum forging shaft size is 12 m or close to12.8 tons. The ...