Painting of steel surfaces What are the criteria for defining the need to scrape? How to deal with the bolts on the equipment when painting?

1. The standard of scraping putty for surface painting does not seem to be so strict, just considering that the surface of some welds or joints is relatively rough, in order to make the surface clean after painting, it is necessary to scrape putty.

2. In order to protect the threaded part of the bolt, spray paint or plastic spraying should be threaded part of the protection, such as the use of plastic film winding and other ways to protect, otherwise the threaded part of the paint covered will not be able to use the situation. Nanjing Kean shelves for your answer