Specail shape tube :
Coils as the most important part of evaporative condenser,the coils shape will effect the heat exchange.most of manufacturer use circular tube. Company Evaporative condenser is Special tube as drawing.
The thickness of galvanized casing for coils is more qualified than other manufacturers:
I company galvainzed thickness is around 0.2mm, average is 0.15mm. the other manufacturer is average 0.8mm. based on that, the using life of evaporative condenser is longer than most of other manufacturers. if the thickness of galvanized casing is not enough, the equipment will be easy to rust corrosion.