... steel,SS 2.Process:Investment casting 3.Used:Power Pump Impeller,Stainless Steel Impeller,Impeller Casting Pump impeller as ... surface roughness higher accuracy..Material: Carbon steel, alloy steel, stainless steel,grey iron,ductile iron.Standard: ASTM, AISI, BS ... .Application:It's widely used to construction,oilfield,electronic, power, chemical, metallurgy, medicine...For more information please feel ...