Method of wedging a tubular cylindrical element made of carbon-epoxy composite material, obtained by filament winding of carbon fibers, hereinafter designated sheath in a cylindrical housing, concentric with said sheath and which consists of a metal tube, in particular in steel hereinafter referred to as steel tube, characterized in that it consists in injecting, in the liquid state, into the space between said composite sheath (10) and said steel tube (12), a phase change material solid / liquid, reversible, temperature-activated, consisting of a paraffin chosen from the range of paraffins having a melting temperature between 45 and 60 ° C. approximately, in which polyethylene granules are dissolved, said cushioning material being cooled solidifies at room temperature, thus maintaining said internal tubular element (10) in its cylindrical housing (12).
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