Pump Casing Material: Ductile Iron and Grey Iron, Alum-Bronze Process: Sand casting,CNC Hydro-test be made. ISO9001: ... Ductile Iron and Grey Iron, Alum-BronzeProcess: Sand casting, CNC machiningHydro-test be made.1.The material is ... etc.2) Process: Investment Casting, Sand Casting (Resin Sand Casting, Green Sand Casting), Permanent Casting, Die Casting, Centrifugal Casting, Forging and Stamping etc.3 ...