After shot blasting, there are small pits on the surface of the strip steel. By swinging and brushing, the surface roughness can be effectively changed.

After the steel strip is twisted and shot blasted, the surface oxide skin still remains on the surface of the steel strip. By swinging and brushing, the remaining oxide skin can be effectively removed.

Brushing and pressing can easily cause concave layers on the roller surface. By swinging and brushing, the flatness of the roller surface can be maintained, making full and effective use of the brush roller.