The plates, profiles and other main finished materials used for the fabrication and installation of ventilation pipes shall comply with the provisions of the current national standards for design and related products, and the factory inspection certificate shall be applied. The materials shall be accepted according to the current relevant national standards when entering the site. Yiguantong Xiaobian reminds you to pay attention to the use of air ducts of different materials.
On this premise, the air duct materials selected for the industrial ventilation system are steel plate and galvanized sheet. The air duct selected for the purification and air conditioning system is made of galvanized sheet and stainless steel. Do not use FRP and composite air ducts that may be polluted by dust sources; The air duct selected for the environmental control system is made of galvanized sheet and stainless steel.
The air conditioning system uses galvanized sheet and color steel insulation board air duct. In special occasions, such as mineral commercial coated cloth air duct and mining plastic ventilation pipe, this can improve the characteristics of flame retardant and antistatic mining. In addition, there are FRP air ducts, which are divided into * and inorganic. The materials with fire protection requirements are prohibited.
At present, non-metallic air duct materials develop rapidly and have many varieties. Due to their characteristics and advantages, they are more and more widely used. In order to ensure the in use, the air ducts made of these materials are required to have the combustion performance of incombustible or flame retardant grade B1 according to the needs of the project, and the surface layer is made of incombustible materials.
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