B) Impeller head locate at multi angle, which is the high efficiency blasting wheels, shot blasting with high-speed thick blasting pills and blowing on the surface to have a tridimensional and omnibearing cleaning,

C) To clean away the rusting layer, oxidation layer and other dirty things from surface quickly,

D) To make surface achieve a bright and clean surface and to improve the adhesion force of painting to surface and improve the anti-fatigue force and anti-rust capacity of surface,

E) Improve the inherent quality of surface and prolong the lifetime of steel tube.

F) Through using the mobile impeller head to strike the rusting layer, , oxidation layer and other dirty things on the internal wall, to achieve a bright and clean surface and to improve the adhesion force of painting to surface.

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