This series adopts blast wheel with high effectiveness and energy saving of centrifugal cantilever type, which could throw shot with high speed route and large quantity of shot. It is pendent-chain and step-by-step with multi-position, and users could choose the work position as per productivity. The workpiece after cleaned has no residue graver, scale and rust, showing clean and bright metal surface, which could improve paint quality of worpiece and expose surface defect of worpiece to the effect that unqualified worpiece could be sorted out.