The working principle of the perlite composite duct mainly relies on its unique structure and material properties, which collectively ensure the performance and safety of the duct under various environmental conditions. Perlite composite ducts are typically manufactured using galvanized steel plates, decorative protective steel plates, and fire-resistant insulation boards through a mechanized automatic composite production line. This structure not only enhances the fire resistance of the duct but also improves its thermal insulation properties. Furthermore, the perlite composite ducts utilize metal flange bolts for connection, ensuring the stability and reliability of the duct.

The main materials for the expanded perlite composite ductwork include expanded perlite silicate cement composite materials and prefabricated fire-resistant ducts. These materials offer excellent fire-resistant and moisture-proof properties, meeting the demands of ductwork in high-temperature and humid environments. The expanded perlite silicate cement composite is prepared by mixing fly ash with a casting method, which can uniformly distribute under specific conditions, further enhancing the fire resistance and thermal insulation of the ductwork.

In summary, the foam glass composite ducting, thanks to its unique structure, materials, and advanced production process, boasts excellent fire resistance, heat insulation, corrosion resistance, and moisture-proof properties, ensuring stable operation and safety of the ducts under various environmental conditions.