... of producing 50,000 tons of free forging, ring forging and die forging annually.Our company own ... machine, 2000 tons Hydraulic press machine, RAM3800 CNC ring rolls, 3T electric-hydraulic hammer, frictioin press for ... Germany Spike’s direct reading spectrometer, macro and micro meatalloay analysis instrument, flaw detectors such as ultrasonic, ... Road . Pudong .Shanghai ,China forging retaining rings