1. We should prepare the tools used for repairing: sandpaper, brushes, spray paint or barrel paint. When choosing paint, we should try to choose anti rust paint or polyester topcoat. We should also ensure that the stainless steel castings are painted at least twice, and the rust spots in the rusted areas need to be polished clean with sandpaper.
2. When using paint for painting, it should be painted as evenly as possible. After the paint is dry, it should be painted again. When painting, polyurethane topcoat should be used, and the surface should be as smooth as possible.
3. If the aging of stainless steel castings is severe, it should be considered to replace them with new ones as much as possible.