... -wax process,sand process and resinsand process! OEM CAST IRON A:Name:pump body of casting B:Material:Cast steel, ... cast iron, grey iron,ductile iron,carbon steel.stainless steel,brassC:We has its own ... Central/South America· Asia· Western Europe· Australia 1MaterialDuctile cast iron,Grey cast iron2SandGreen sand,sodium silicate sand 3MachineLathe,CNC,Drilling ...