... : According to ISO 9001 2001 4.OEM We produce Invest castings for the following industries:Industrial machinery parts, Marine hardwares, Pipe ... DIN ,EN, ASTM, BS,JCSI.Piece numbers: small, medium and large series.Process: cast, machining, turning, milling, drilling, thread cutting.Surface ... -ray,metallograph.Quality control: According to ISO 9001 2001 Sand Castings