We provide machine tool forging as: shaft sleeve, crank shaft, gear ... double-flange joint forging, locking coupling forging, and so on. Materials are: 4130 4140 1040 1030. with factory ... , water conservation, power plant, pipe accessories and so on. Welcome to contact me for further discussion.Paul JingSales ... : 0086-13853179742Fax: 0086-531-83861079 Machine tool forging parts(blank&finish machining)