Corrosion-proof and explosion-proof axial fans are a type of fan suitable for use in flammable and explosive facilities, as they do not produce sparks during operation. They are mainly used in industries with explosion-proof requirements, such as petrochemicals. Explosion-proof centrifugal blowers are generally used in environments where flammable and explosive gases, dust, or liquids are present. In such settings, sparks generated by the fan operation can be fatal. Therefore, all components in the centrifugal blower that could produce sparks must undergo explosion-proof treatment.