Jinan air duct processing plate flange is mainly composed of corner code, flange clamp and flange connection, which is integrated with the air duct. Although the cost of this kind of air duct is low (the consumption of angle steel is reduced, and the labor consumption of making angle steel flange is reduced), it is not as good as angle steel flange in practical application, and the air leakage rate is also large, so it must be processed by machine tool.
Manual manufacturing is difficult to achieve its production, usually only used for fresh air system, air conditioning system and so on. The exhaust system usually adopts angle steel flange connection, but the civil air defense project does not allow the use of ordinary flange connection, so what is the foundation of Jinan ventilation pipe? Next, let's have a detailed understanding. I hope I can help you.
Jinan ventilation pipe processing
Jinan ventilation duct manufacturers found that in the process of processing and manufacturing air duct, the requirements for materials are quite harsh. When the surface layer of air duct is aluminum foil, in order to ensure that the surface layer is not easy to be damaged, the material and thickness of aluminum foil are specified, and the thickness of aluminum foil on the surface layer of air duct compounded with reinforced material is specified.
Nonmetallic duct materials have been widely used because of their characteristics and advantages. In order to ensure the safety of use, according to the needs of the project, it is suggested that the air duct made of these materials should have non combustible or flame retardant B1 combustion performance, and the surface must be non combustible materials.
According to the engineering application practice and product status in China for many years, the low value of peel strength test and aluminum foil thickness of thermal tape and pressure-sensitive tape are specified, and the width of tape is required to be no less than 50 mm, so as to prevent the tape from failing to meet the sealing strength of pipe wall and the service life of air duct. The advantage of thermal adhesive tape is that it depends on hot-melt bonding. As long as it is not heated, the bonding surface is solidified at room temperature, and it has strong bonding strength.
Jinan ventilation pipeline is a kind of municipal infrastructure for circulating air and reducing the concentration of harmful gases. The main finished products such as plates and profiles used in the production and installation of ventilation pipes and ducts shall comply with the current national design standards and the provisions of relevant products, and shall have the factory inspection certificate. When entering the site, the materials shall be accepted according to the current national standards.