... CASTING PART WORLDWIDE EXPORT EXPERIENCE sand casting part OEMService offer:1, Casting : 2, Machining: 3, Inspection:4, Raw ... Material ExportOEM Casting:1, Casting Material: Grey iron, Ductile iron, Alloy steel , Carbon ... Machining--HT--Mechanical testing---Final MachingQuality Control:OEM Casting Cross checking point:1, NDE after Rough Machining2, Hardnes checking ...