Heat Treatment Factory has 231 units of production equipments including 6 units of imported equipments and several sets of shielding gas atmosphere roller furnace casting chain furnace roller furnace and high-power mesh belt furnace and quasi-processing high-speed railway bearings Bainitic automatic production lines the vacuum furnaces and multi-functional carburizing furnaces for military products. The equipment mainly is responsible for quenching tempering carburization surface plating and so on. The diameters of the processing range from ф 3mm to ф 2230mm. The processing capacity can be more than 50 million pcs per year and production of rollers can be over 630 million pcs per year.