... a piece of five ton free forging hammer, a piece of three ton forging hammer, a piece of 8,000 ton ... 000 ton friction press, a piece of 8 ton die hammer with medium frequency induction heating, 50 pieces of machining equipment, over ... annealing and hardening and tempering. The test equipment is complete with physical and chemical laboratory, optical microscope, supersonic wave nondestructive flaw ...