| 摘要 |
<p>A method of providing a bent tube made of a heat sensitive e.g. thermoplastics material includes the step of causing the circumferential wall of the tube (2) to be selectively heated, such as by high frequency excitation, whereby the parts (9) of the circumferential wall corresponding to the inside and outside of the bend of the bent tube are heated more than the remaining parts (10) of the circumferential wall.</p> |
