These fans are for an international paper OEM. They are installing them as part of an alkali recovery boiler system in a pulp plant in a paper factory here in China.

Depending on the role of the fan they were either constructed in stainless 304L or mild steel. 

All fans were then fully run and witness performance tested by our client. The fans will be acoustically lagged later on site, hence the porcupine look in the pictures.  

Halifax Fan – Engineering Masterpieces