“Industrial” fan does not have a clear definition, but the term is intended to mean a fan of heavier construction to meet the demands of industrial operations. This may include the use of thicker material gauges, larger shafts, bearings with increased bearing life, high temperature features, corrosion resistant materials, etc. compared to commercial or HVAC fans.
Centrifugal Fans (For Industrial ) have three basic wheel designs referred to as Radial Fans, Backward Inclined Fans and Forward Curve Fans. Since all these designs normally have a centrifugal blower housing around the wheel, they are generally, with some exceptions, referred to as blowers; not fans.
The applications of these blowers are used for is so broad, it would take volumes to list them all. However, they typically fall into one of six basic categories: Ventilation,Exhaust, Material Conveying,Cooling,Pressurization, and Vacuum..