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     Helical threaded tube bundle type tubular heat exchanger，The product has applied for national patent.
     Features ◆The heat exchange area in unit volume is increased and the energy utilization rate is raised ◆The flow sectional area in unit volume is increased and the pressure drop is reduced. ◆The shell-and-tube heat exchanger is made to be smaller in volume and higher in heat exchange efficiency when the heat exchange area is very large. ◆ Convenient maintenance and servicing ◆The special connection type enables the heat exchanger to be more stable without easy leakage during heat exchange and enhances the service life of the product.