... Quality Finished surface:Smoothly. Casting part1MaterialDuctile cast iron,Grey cast iron2SandGreen sand,sodium silicate sand3MachineLathe,CNC,Drilling machine ... casting,gravity casting,chill casting. Specializing in casting part of grey iron and ductile iron,we also process brass and ... Gearboxes,Auto parts,Speed reducers,Ejecters,and various types of graded casting. If you're intetrested,pls contact ...