ductile iron casting,machine part 1,Processing: sand casting; 2,OEM Service Offered 3,Buyer Label Offered Sand casting:1.Process: resin sand and ... green sand2.Material: gray iron,ductile iron,carbon steel,aluminum alloy,brass or ... 2000mm Wax casting:1.Process: silica sol process and water glass2.Material:stainless steel,carbon steel,alloy steel,copper,brass or ...