... damping30-70% material saving compare with solid bar for hollow partsMachined parts in these and other industries ... ,sealing ring, sliding sleeve Industrial machineries axis sleeve, gear, kawa, wear-resistant sleeve, grinding sleeve Oil drillingdrillable ... ring, steering pump stator, gear Tractorshippingdry cylinder liner, piston ring, steering pump stator, gear Mine mechinanismwear resist sleeve, ...