Prefabricated Steel Structure Warehouse Building Material

The rust removal and painting of steel structures is a work that steel structure contracting units are prone to overlook, and it is also a weak link in steel structure engineering construction. If this phenomenon is not corrected, it will have a significant impact on the construction quality of steel structures, because the quality of rust removal and coating directly affects the maintenance costs of steel structures during their future use, as well as the service life, structural safety, and fire resistance time (fire resistant coating) of steel structure engineering. The root cause of this phenomenon lies in the insufficient understanding of the importance of painting work by the relevant personnel of the contracting unit, coupled with a lack of quality responsibility, and even a pursuit of profit, ultimately leading to frequent quality problems in painting engineering. Therefore, the supervising engineer must attach great importance to rust removal and painting work, and conduct strict inspection and acceptance of each process, which is the foundation and guarantee for ensuring the quality of steel structure painting.

Regarding the coating quality of steel structure engineering, the following work should be done well: (l) strict acceptance of the rust removal quality of steel components according to the design requirements; (2) Check the factory quality certificate of the coating raw materials, and also check the approval certificate of the fire department for fireproof coatings; (3) Thoroughly remove dirt, oil stains, and other debris from the surface of the components before painting; (4) The painting construction should be carried out in a dust-free and dry environment, and the temperature and humidity should meet the specification requirements; (5) The number of coats and coating thickness should meet the design requirements; (6) Careful treatment should be carried out on the damaged areas of the coating to ensure the quality of the coating; (7) Carefully check the adhesion of the coating; (8) Strictly conduct appearance inspection and acceptance to ensure that the coating quality meets the requirements of specifications and standards.