1.compressor part/air compressor part 2. Made by Continuous Cast Iron Tube 3.High ... in mechanical industries,such as railway vehicle, oil machine,engineering machine,auto parts,compressor, hydraulic and pneumatics,chemical pump, machine tool ... axis sleeve, gear, kawa, wear-resistant sleeve, grinding sleeve Oil drillingdrillable packers/drillable bridge plug, suction vitta Railway vehicle bogie ...