Therefore, the regular maintenance of the air duct will have an effect on the use of your air duct and the life of the air duct.
Duct reinforcement: The ventilation duct has a large side length of ≥ 650mm and a length of ≥ 1250mm. It is reinforced and the material used is the same as the flange material.

Anti-corrosion: The common steel plate wind pipe must be brushed anti-rust paint before the pipe is closed, and then the anti-rust paint is applied again before and after the installation. Supports and hangers should be completely preserved. A lacquer is sprayed on the air duct flange. Preservation shall be carried out under ≥5°C and ≤80% humidity conditions. Degreasing and rust treatment shall be performed before construction.