... and Grey Iron, Alum-Bronze Process: Sand casting,CNC Hydro-test be made. ISO9001:2000 Pump CasingPump CastingPump PartsPump HousingMaterial: ... and Grey Iron, Alum-BronzeProcess: Sand casting, CNC machiningHydro-test be made.1.The material is Ductile Iron and Grey Iron, Alum ... etc.We are able to supply the products as follows:1) Materials include: Stainless Steel, Carbon Steel, Alloy Steel, Ductile ...