In many industries, refrigeration, air conditioning and sensitive piping systems, one of the most important challenges when welding and soldering copper pipes is oxidation of the inner and outer surface of the tube. The issue of preventing the oxidation of copper pipes with nitrogen flux charging is not only technically important, but also plays a decisive role in increasing the life of equipment, reducing repair costs, and improving the overall performance of the system. When the copper tube is exposed to heat and at the same time oxygen is present in the inner space of the tube, oxide layers, soot and unwanted deposits are formed quickly. In the future, these pollutions can cause blockage of the path, decrease in system efficiency, pressure drop and even failure of the compressor and sensitive parts. For this reason, preventing oxidation of copper pipes with nitrogen flux charging has become an important principle in the standard implementation of professional projects.

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