| 摘要 |
PURPOSE:To provide a method for manufacturing a synthetic resin pipe in which the pipe is cooled from both inner and outer surfaces to optimize a cooling capacity and to prevent the generation of residual strain. CONSTITUTION:A heat pipe 5 is installed at the end of a base 1. A synthetic resin pipe P is cooled by contacting the inner surface of the resin pipe P, which is extruded from the base 1, with the outer surface of the heat receiving part 51 of the heat pipe 5, while the outer surface of the pipe P being cooled with cooling water. In this way, the synthetic resin pipe P having constant diameter dimensions, stable quality, and other merits can be produced. |
