... sand2.Material:Grey iron,Ductile iron,Malleable Iron,Stainless steel,Carbon Steel,Aluminum, Brass ,Bronze or on request of customer3 ... sol and water glass process 2.Material:stainless steel,carbon steel,alloy steel,white steel,copper,brass or on request of customer3.Weight ... free forging2.Material:gray iron,ductile iron,iron,carbon steel,white steel,steel,aluminum alloy,brass or on request of customer3. ...