Ventilation pipes can promote air circulation and reduce the content of harmful gases. The exhaust pipeline collects harmful substances from the exhaust fan or air inlet and sends them to the purification equipment through the pipeline. Discharge or reuse after reaching the standard.

2. Different uses

Ventilation pipes can be used in industry, construction engineering and urban infrastructure. The exhaust pipe is mainly used to exhaust air.

3. Different materials

Ventilation pipes are divided into steel plate ventilation pipes, galvanized steel plate ventilation pipes and plastic ventilation pipes. The exhaust pipe only needs a purification device and a fan. Generally, the pipes are connected into a whole, and then it forms a part of the exhaust system.

Second, what are the precautions for installing the smoke exhaust pipe?

1, the specifications, installation area and elevation of the exhaust duct shall meet the design requirements. On-site air duct installation shall not be lower than the effective cross section of the interface.

2, duct interface connection should be in a tight and firm state, and the thickness of the gasket should not be less than 3 mm, shall not protrude into the pipeline and flange. It is suggested that the gasket of air duct flange should be made of incombustible materials, and the air duct with thin steel plate flange should be connected by bolts.

3. The installation of air duct supports and hangers shall be carried out in accordance with the relevant provisions of the national quality acceptance specification.

4, duct interface, to insert in the direction of airflow, and take sealing measures.

5. Flange connection should be selected for the connection between the air duct and the fan, or a tender short pipe made of incombustible materials should be used for connection. For example, when used for smoke control, flexible connection is not recommended.