Air Compressor Liner High Density,Zero Cast Defects,Superb Wear Resistance I.Intro:Based on horizontal continuous casting for ... industries,such as railway vehicle, oil machine,engineering machine,auto parts,compressor, hydraulic and pneumatics,chemical pump, ... gear, kawa, wear-resistant sleeve, grinding sleeve Oil drillingdrillable packers/drillable bridge plug, suction vitta Railway vehicle ...