Surface treatment method of space frame Steel pipe before painting
The painting of bolt ball space frame steel pipe has the function of anti-corrosion. Because the surface of steel bar will be covered with oxide skin, welding slag, dust and oil stain during processing, transportation and storage. So workers need to treat the surface of steel bar before painting to remove the rust,burrs and other substances on the surface, otherwise, it will affect the adhesion and corrosion resistance between the coating and the pipes,and it will also cause the steel bar to continue to corrode under the protection of the coating, make the coating peel off, affecting the mechanical properties and service life of pipes. The following is the surface treatment method of space frame pipe before painting： 1. Manual processing There are mainly scrapers, wire brushes or grinding wheels etc. The rust and scale on the surface of steel bar can be removed manually, but the manual treatment has high labor intensity, low production efficiency and unclean cleaning. 2. Che