this series is designed for thelarge,middle and small calibre size of the steel pipe and thecylinder.impeller head locate at multi angle,which is the hignefficiency blasting wheels,shot blasting with high-speed thickblasting pills and blowing on the surface to have a tridimensionaland omnibearing cleaning,to clean away the rusting layer,oxidationlayer and other dirty things from surface quickly,to make surfaceachieve a bright and clean surface and to improve the adhesionforce of painting to surface and improve the anti-fatigue force andanti-rust capacity of surface,inprove the inherent qualitu surfaceand prolong the lifetime of steel pipe.