First, the characteristics 
 GDF series pipeline centrifugal fan, the Department learned of the Company on the basis of foreign advanced technology to improve new product made, the product can be directly connected with the air duct, performance, smooth running, low noise, reasonable and compact structure, easy installation, is the nineties to replace imported products to fill the gaps. 
 Second, the model structure 
 Prior to the arc by a number of impeller blades aluminum, front plate, back plate composition, made from molds are mechanized, and by static and dynamic balance calibration, stable and reliable, with good aerodynamic performance. 
 Chassis with galvanized steel or stainless steel plate, the mold after the point of mechanized welding. Structure of solid, reasonable and compact. Motor bearing galvanized by the mechanization of molding shape. 
 Motor are supported by external rotation with a single motor, impeller fixed on the motor housing, click on the support end is fixed on the motor bearings, motor bearings fixed to the chassis on the roof, directly driven by the motor housing rotating impeller operation. 
 Third, the fan uses 
 The product can be widely used in hotels, shopping malls hospitals, theaters, dance halls, auditoriums, universities and research institutes, and industrial and civil buildings with air ventilation inside.