main usage:it is suitable for conveying flammable, explosive and non-corrosive gas.the ambient temperature should not exceed 60℃.it is widely used in general factories，warehouses，offices，residential ventilation or strong heating，and can also be used in long exhaust pipes.install in series at intervals to increase the pressure in the pipe.
*the impeller is made of aluminum alloy die一casting to prevent sparks during operation.
* the motor adopts explosion一proof motor and explosion-proof mark exd!!bt4.
* the fan is made of high一quality steel plate and has high strength.
* it has a good amount of aerodynamic performance，high air volume，high pressure，small volume, low noise，high e衍ciency flat performance curve，compact structure and convenient insta!lation.