... in machinery, casting, automobile industry, shipbuilding, military industry, steel structure, oilfield, etc.3) Company introductionWe are a ... 9001-2000.4)Main productionWe mainly produce roller-type shot blasting machine, sand processing, environmental protection and casting of profession ... to your demand or drawing.Materials:carbon steel ,alloy steel,cast iron,cast steel,pig iron, grey iron ,ductile ...