(1) Rough machining of surface(polish, pull rough, rust clearance)                          

(2) Clear of surface (dirt reduce, oil relieve)

(3) Finishing of surface(Mill, gloss marking ,polish)

Selection for applying of industrial brushes First of all, the choice of industrial brushes would be according with the performance of the material which will be done, e.g: smooth finish and hardness of material, etc…selecting suitable steel wire of brushes; choosing correct shape of brushes according to the different condition; to calculate the specification and rounds of the brushes basis on technological process Normally, same diameter of the wire, the more short ,the mill force is more strong, the more long, the more less, and diameter of whole brushes(around one) more bigger, and result is much better..