custom die casting aluminum impeller 1.Material:Metal(SS,Aluminum) 2. ... CNC Turning,Drilling,Boring,Milling stainless steel impeller/Turbine WheelSpecifications1.No defects sand casting+CNC deeper processing. 2.Produce upon your ... , ductile iron, cast iron etc.PP,PE,ABS,PET,PVC custom stainless steel impeller/Turbine Wheel