1, Pump Parts, pump body 2, Steel, iron,alloy 3, your drawing is welcomed 1, Pump Parts, pump body2, Steel, iron,alloy3, your drawing is welcomed1. Product Name: Investment Casting / Precision Casting Parts / ball Valves / stainless steel sand casting parts / machinery parts / CNC machining parts, Steel Investment Casting / lost wax / casting / die casting2. Progress of precision casting: ...