Heat Exchanger is a device that allows heat to pass from a fluid to another in the hot-dip galvanizing process. But two fluids don’t mix. The heat energy is transferred from the hotter medium to the colder one through the plate between the channels. The external design of Heat Exchanger consists of front channel head, shell, and rear channel head. Fixed tube sheet, tie rods, tubes and baffle plate are the main internal parts of the equipment. Heat Exchanger is manufactured completely from steel. It is very useful for recycling heat from flue gases. So there is no energy loss. The waste heat energy can be recovered and used for further heating purposes too.