... include automobile redirector pitman arms, pitman arm shafts, pistons, screw nut assemblies, worms and other metal forgings. Besides, we ... -ton friction presses, 500-ton hydraulic presses, 300kg machine tools, grinding machines and milling machine equipment to strictly control the ... friction press, 500 T hydraulic press, 300 KG, machine tools, grinding machine, caused the milling machine, and so on, ...