The FGXF fiberglass diagonal flow fan has a drum shaped structure, and its small inlet and outlet characteristics accelerate the airflow velocity and high pressure coefficient. In the case of the same model as a general axial flow fan, its flow rate and pressure are both greater than those of an axial flow fan. This series of fans replaces low-pressure fans, saving energy investment and land occupation, simplifying design, and ensuring safe installation. In pipeline ventilation situations where axial flow fans cannot meet the pressure requirements, using diagonal flow duct fans is the best choice. It has the characteristics of light weight, good corrosion resistance, resistance to aging, and low noise. Widely used in industrial and mining enterprises, hotels, museums, sports venues, chemical engineering, laboratories, environmental protection supporting equipment and other places for pipeline compression and exhaust. The transported gas is not allowed to contain viscous substances, dust and hard particles ≤ 150mg/m3, gas temperature ≤ 60 ℃, and relative humidity ≤ 100%.