... , BS,ISO 3.Quantity: It can be negotiated. GREY IRON CASTING 1) Materials: grey iron, ductile iron2) Standards: ASTM, JIS, BS, DIN ... or samples Detailed products range: pipes and its fittings, grating, frame, manhole covers, pump parts, hand-wheel, valve, flange, bollard, piling ... other industry machinery parts. Dalian Leading Metal Ltd welcome you. grey iron casting parts