1. Remove the scales and weld dregs
2. Make it show metal color
3. Increase its ratio surface and weld dregs
4. Increase its ratio surface area
5. Thus contribute to painting and coating
6. Enhance the corrosion resistance of the machine and metal section.
7. Enhance the steel's fatigue resistance, extend the service life.
8. Optimize the technology of the steel surface
9. Achieve the complete clean-up purpose
