Antiaircraft gun billboards are sunned in the sun all year round. For the beauty of antiaircraft guns, it mainly depends on the later maintenance. Maintenance is a long-term work, good maintenance, and the use time of antiaircraft gun billboards. It can also save costs and ensure safety of anti-aircraft guns.
Maintenance of anti-aircraft billboards every year mainly checks the steel structure of billboards to see if there is welding and whether the anti-rust paint is in good condition as follows: 1. If rust, paint peeling off, weathering and other phenomena are found, the grass-roots should be cleaned up, rust removed and re-painted. When the surface gloss reaches 80%, the surface is rough, the weathering rate is 25%, and the paint film is the shell, maintenance work should be carried out. 2. Annual inspection of the joints (welds, bolts, anchor bolts) shows that there are cracks in the welds. When the joints are loose, the joints should be repaired in time to maintain stability. 3. Maintain lighting, power supply and electrical control equipment monthly without leakage and lighting.