In different areas of the equipment and electronics there is a need for ensuring fast heat removal from a high-heated zone.  For this purpose use different radiators with air or liquid cooling. The last have big efficiency. But they not always have high performance even with a high speed of cooling liquid. It is necessary for increase in their efficiency that the pipe had the different form and turbulizers on all the length.  The known ways of production of heat-exchanging pipes using electrochemical processes have or low productivity, or do not allow creating cavities of any form.  As a result of researches the new way of production of heat-exchanging pipes by means of dimensional electrochemical processing was developed. It allows: to increase production process productivity, to receive cavities of the set form and the sizes, to create the additional turbulizing elements in a pipe.  The electrode tool has a cylindrical part with the changing form from the metallized rubber. Feature is that a working part is separated into several sites by dielectric rings which can have different width, the supplied limiters from the teflon. Changing width of dielectric rings, it is possible to change both distance between cavities, and their maximum size. Performance of limiters from the teflon excludes a possibility of edge fins at extraction of an electrode tool from a heat-exchanging pipe. Besides, dielectric rings can move along a working part. A working part on each of sites has the stretch ratio increasing in the direction opposite to a current of electrolyte. The stretch ratio of rubber is changed by change, both by thickness of the metallized rubber, and chemical properties of the rubber.  At dimensional electrochemical processing, electrolyte is given to an interval between an above-mentioned electrode tool and a heat-exchanging pipe. Then connect a working part to a source of low tension and receive a side cavity, by anodic dissolution of material of a pipe and change of pressure in a working part with the changing form. After production of cavities along all surface in a heat-exchanging pipe, pressure in a cavity of an electrode tool is reduced to initial then the electrode tool is removed from a heat-exchanging pipe.  As final operation serves washing of a heat-exchanging pipe with the flow water heated till 40-80 0С, within 10-15 minutes with following drying on air or a gas jet from pneumonetwork.  Technical result is increase in labor productivity and efficiency of thermal pipes, thanks to a possibility of simultaneous production of several cavities and a possibility of flexible change of their form, the sizes and distance between them.  Production of cavities of irregular shape in radiators (from brass or aluminum) with liquid cooling sharply increases their efficiency on heat removal from a heated zone. Availability of turbulizers also helps to cut a consumption of cooling liquid and as much as possible to use it.