... Material:alloy steel,SS 2.Process:Investment casting 3.Used:Power Casting Impeller,Pump impeller,Stainless Steel Impeller Pump ... supply pump impeller, propeller, pump parts, valves and so on! Sand casting have the clear advantage such as extreme ... AISI, BS, DIN, JIS, NF .Process: Sand casting (resin sand casting,green sand casting) .Machining: Turning, milling, drilling, grinding, threading, ...