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) Standards: ASTM ... drawings or samples Detailed products range: pipes and its fittings, grating, frame, manhole covers, pump parts, hand-wheel, valve, flange, bollard ...