The GXF diagonal flow fan is a drum shaped structure with a small inlet and outlet, which accelerates the airflow velocity and has a high pressure coefficient. With the same machine number as a general axial flow fan, its flow rate and pressure are higher than those of a general axial flow fan. So it is particularly suitable for places with small installation space for pipelines. This fan is widely used for pipeline pressurization, air supply and exhaust in industrial and mining enterprises, hotels, museums, sports venues and other places, as well as for ventilation and air exchange in high-rise buildings and general buildings. The temperature of the transported gas is between -20~80 ℃, and the dust is ≤ 100mg/m3.