1.Material: gray iron, ductile iron, 2.Specification: DIN, ASTM, BS,ISO 3.Quantity: It can be negotiated. GREY IRON CASTING 1) Materials: grey iron, ductile iron2 ... -wheel, valve, flange, bollard, piling accessories, counterweight, iron, construction machinery parts and other industry machinery parts. Dalian Leading Metal Ltd welcome you. grey iron casting parts