Aluminium Extruded Fin Tube Aluminum extruded fin tube is formed from a bi-metallic tube. Consisting of an aluminum outer core and an inner tube(steel, copper or titanium etc.) as a mandrel. Outer core is compressed to fins on its outside surface through the cavity formed by the groove and the inner tube by the rolling blade. The finned tube produced by this method provide an integral fin, so there is no contact thermal resistance loss, and the heat transfer efficiency is high. Compared with the welding process, the three-roll cross-rolling(extruding) process has the advantages of high production efficiency, low consumption of raw materials, and high heat exchange rate.Maximum operating temperature for this fin type is 290°c. FEATURES As a heat exchange component, extruded fin tube works under the condition of high temperature flue gas for a long time. For example, the fin tube of the boiler heat exchanger normally exposed to a severe envir…

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