4-72 centrifugal fan can transport air and other gases that are not spontaneous combustion, harmless to human body and non corrosive to steel. Viscous substances are not allowed in the gas, and the dust and hard particles contained in the gas shall not be greater than 150mg / m3. The gas temperature shall not exceed 80 ° C. The fan has the characteristics of good aerodynamic performance, balanced operation, low vibration, high efficiency and long service life. It is widely used for indoor ventilation in industrial and mining enterprises, large buildings, hotels and restaurants. B4-72 explosion-proof centrifugal fan is mainly composed of aluminum impeller, casing, air inlet and other parts and anti riot motor. It can be used for ventilation of flammable and volatile gases. Its performance and installation dimensions are the same as those of type 4-72. F4-72 is an anti-corrosion centrifugal fan, which is mainly composed of impeller, casing, air inlet and other parts made of stainless steel (or FRP) and motor. It can be used to transport corrosive gas. Its performance and installation size are the same as that of type 4-72

     The impeller and shell of ft35-11 FRP axial flow fan are made of FRP composite material. This series of fans have the characteristics of simple structure, low noise, simple installation, good anti-corrosion performance, high static pressure and efficiency, stable operation, low mechanical vibration and so on. It is widely used in pickling section, laboratory, basement, power plant, electroplating, oxidation plant and other places containing corrosive gases. It is also suitable for ventilation in general industrial and mining enterprises, warehouses, office buildings, residences and other places. It can also be applied to the interval series installation in a long pipeline to improve the pressure in the pipeline.