... threaded spindle, nut, shaft products, sleeve products, roll, backing roll, working roll, table roll, pulley, car wheel, centric wheel and so on ... products which are less than 120 tons, such as roll, support, frame, box body, gear blank, sleeve products, skidway, valve body ... kinds of lift hook forgings with carbon constructional steel, tool steel, roller-bearing steel, spring steel and different alloy ...