| 摘要 |
<p>The invention is the production process for the metal tube (1) with at least two walls, wherein the copper is coated onto the steel sheet layer (1.1) by means of the electrolysis method, two wall tube (1) is obtained from the obtained sheet layer (1.1) with copper layer (1.2), the obtained two wall tube (1) is permitted to reach the brazing temperature, then it is heated at the brazing temperature and is joined by means of copper braze heated up to the occurrence of the optimum brazing, said invention being related to cooling the tube (1) by providing its contact with air along the elongation line (A) and the annealing line (T) by means of the annealing line (T) being integrated with the elongation line (A).</p> |
