... iron casting parts 1.Casting in high quality 2.Smooth casting, free of sand 3.GB, ANSI, API, DIN, BS, JIS Ductile Iron Casting Detail:1). Ductile iron casting ... machining part are smooth, well cleaned, free of sand, porosity, cracks and inclusions.2). Products for invenstment casting ... , flanges, valves parts, casting and forging parts, engineering goods, etc ...