| 摘要 |
The present invention relates to a heat exchange pipe capable of preventing the deformation of pipes and, in particular, to the heat exchange pipe capable of preventing an outer pipe or an inner pipe, having different coefficient of thermal expansion moves relative to each other as high temperature combustion gas flows in the heat exchange pipe in which the outer pipe and the inner pipe are assembled, from being deformed from the predetermined position due to the difference in coefficient of thermal expansion. |
