This shot-blasting machine using rolling path can continuously operate. It is a kind of automatic ball blasting device. This machine is mainly used in clearing the rust oxidized shin of H-beam, steel plate, steel pipeline. And it can smooth the beam surface and makes the steel easy to paint. Our sand blasting machine can transports the work piece by trolley in double way, which makes the machine in the high efficiency. In addition, the sand blasting machine uses chromic steel plate that can protects the machine and can extent the using time.