1.Hydraulic pump part/Hydraulic Parts 2.OD:60-320mm Thick 8-35mm 3. Continuous Cast,High density,Zero defects I.Intro: ... 1) ---spheroidization rate 1~2,ball diameter 7~8,ball number 400~600/mm2 ---compare sand casting, at same strength, ... used in mechanical industries,such as railway vehicle, oil machine,engineering machine,auto parts,compressor, hydraulic and pneumatics,chemical pump, machinetool ...