Qingdao galvanized iron ductThe manufacturer believes that the galvanized air duct is mainly made of galvanized steel sheet and formed through bite processing. On-site production is convenient, can be designed at the same time. It is a traditional duct for ventilation and air conditioning. At the same time, with the development of technology, it has changed from the previous manual production to the current mechanized production, which has the characteristics of high efficiency and accurate processing size.

Qingdao galvanized iron duct manufacturers believe that the thickness and specifications of galvanized duct can be changed as needed. Usually, when connected, the two ends of the galvanized spiral duct are always externally connected with pipe fittings (such as elbows and reducing diameters). Generally, there are no grooves and sealing rings at both ends. It has the following advantages:

1. Galvanized air duct has smooth inner wall, low resistance, low ventilation loss, low energy consumption, low operating cost, good air tightness and sealing, and high pressure compressive strength.

Qingdao galvanized iron duct manufacturers believe that good fire performance is also one of the reasons why galvanized duct is widely used in engineering.

3. Simple installation, convenient on-site production, close coordination with civil engineering, suitable for very complex purification and ventilation projects.

4. High strength, low resistance, good sealing performance, beautiful appearance, simple installation and long service life.

5. The inner and outer walls are smooth, the air duct resistance is small, and no secondary noise is generated when sending and discharging air, which reduces energy consumption and saves operating costs.

6. It can be made on site, can be cut, can be drilled, can be drilled, simple installation, saving labor and time, and shortening the construction period.

　　7.Qingdao galvanized iron ductThe manufacturer believes that the galvanized spiral duct does not require maintenance after installation, reducing maintenance costs.

Qingdao galvanized iron duct manufacturers believe that galvanized steel duct is widely used in ventilation engineering, and special attention should be paid to the processing technology of duct. In order to ensure that the ventilation system runs stably, circulates smoothly, does not leak air, and is tightly sealed, what details should be paid attention to in the process of making the air duct? Including: the connection and closing parts such as the air duct bite, hem and flange should be inspected emphatically.

Qingdao galvanized iron duct manufacturer believes that the flange connected with the duct flange should be flat, with the same width, without cracks and holes, and there is no phenomenon that the flange is not perpendicular to the straight pipe ridge line and the flange width is different. Adequate attention should be paid to the connection of air duct with small parts and equipment and the branch of air duct. These parts of the construction to ensure tight leak. If there is a gap in the difficult part, plug it with sealant.

Qingdao galvanized iron duct manufacturer believes that the bite width of the duct should be strictly controlled according to the thickness of the steel plate, and the deviation should not exceed the allowable value of the specification. After the bite is completed, the appearance quality inspection standards of the air duct are as follows: the arc is uniform, the bend angle is straight, the concave and convex surface is not more than 5mm, the two ends are parallel, and there is no warping angle. The bite seam shall be closely combined, and there shall be no half bite or burst opening.

　　Qingdao galvanized iron ductThe manufacturer believes that the connection of the air duct should be tight. The gasket of the pipe flange should not extend into the pipe, nor should it extend out of the flange. When connecting with air duct brick and concrete air duct, it should be inserted along the airflow direction, and sealing measures should be taken at the interface; rain cover should be installed at the outlet of the air duct roof according to the specifications and atlas, and wind-proof measures should be taken. After the installation of the air duct system is completed, the tightness test is required. According to the different pressure levels of the system, the light leakage method or air leakage method can be used.