The working principle of the steel-faced magnesium composite duct mainly relies on its unique material combination and structural design.

The steel-faced magnesium composite duct utilizes a composite structure of steel and magnesium plates, offering multiple advantages. Firstly, the fire-resistant and insulating layer it employs combines fire resistance,耐火 resistance, and insulating properties, featuring a new type of fire-resistant insulation material that meets the integrity and insulation requirements of building smoke and exhaust ventilation ducts. Additionally, the inner and outer protective surfaces of the duct are made of high-corrosion-resistant metal plates or corrosion-resistant aluminum foil, ensuring a service life of over 30 years. The duct connections are made with special angle steel flanges, which not only enhance the strength of the joints but also simplify the installation process.

In summary, the steel-faced magnesium board composite ducting achieves its high fire resistance, corrosion resistance, and ease of installation through its fire-retardant insulation layer, high-corrosion-resistant inner and outer protective surfaces, and specialized connecting angle steel flanges. This ensures its stability and durability in various environments.