... exported to europe and America Process: sand casting ductile iron quick coupling dimension is from 1/2-3",exported to ... material, casting screw.OEM are welcome. Features:1) Material: ductile iron/gray iron standard: JIS, DIN, ASTM,BS3) Weight: 0.1 - ... Leading Metal Ltd. Is specialized in manufacturing different kinds of iron and precision castings, motor housings, flanges, fittings, couplings, valves ...