Metallurgical industry involves a large number of complex working conditions such as high temperature, high pressure, and high dust in its production process, which puts extremely high demands on the performance and reliability of production equipment. Centrifugal fans, as one of the key equipment on Metallurgical production lines, are widely used in multiple processes such as blast furnace blowing, sintering machine cooling, and dust removal systems. They play an irreplaceable role in ensuring smooth production processes and improving energy utilization efficiency.