What are the types of common ventilation ducts.
Ventilation ducts are used to transport air (supply and return air systems) and eliminate harmful gases (exhaust systems). The following are several material analyses of ventilation ducts:
Ordinary cold-rolled steel plate: It is cheap and prone to corrosion, and generally uses supply air, return air, fresh air, exhaust air, and smoke exhaust systems for ventilation.
镀锌钢板： 耐腐蚀性相比刚办好，但在加工过程中铁皮 对温湿度要求较高场合的送回风系统，超净系统中效过滤，易脱落，油漆不易附着器前和中效至过滤器之间的送风系统。
Galvanized steel plate: For supply and return air systems where the corrosion resistance is relatively good, but the iron sheet has high requirements for temperature and humidity during the processing, the ultra clean system has medium efficiency filtration and is prone to detachment, and the paint is not easy to adhere to the supply air system in front of the filter and between the medium efficiency and the filter.
Aluminum alloy plate: dustproof and expensive, with a 30 level purification system filter and air supply system.
Hard polyvinyl chloride board: smooth surface, dust-free, corrosion-resistant, expensive, and prone to aging, with air supply duct after filter and exhaust system in surface treatment workshop.
During the design phase of ventilation ducts, various professions (HVAC, water supply and drainage, power supply and lighting, and architecture) should first negotiate space separation and determine the elevation range of each type of duct. Under normal circumstances, one should not exceed the limits set for oneself. When encountering a section that needs to cross the boundary, it is necessary to negotiate with other projects.
保持通风，不仅可以流通空气，更能减型托辊 吸水树脂 天津水处理设备 邯郸断桥铝门窗 唐山防水 检查井模具 沟盖板模具
Maintaining ventilation can not only circulate air, but also reduce the spread of infectious diseases, which is helpful for our health. After reading the above introduction to ventilation ducts, I hope everyone can have a better understanding of ventilation ducts and be able to select suitable ones.