| 摘要 |
The method according to the invention comprises the following successive steps: - a support is positioned in an end section of the tube, - the tube is heated in the region of the end section, - the tube is formed into a socket in the region of the heated end section, the heated end section being supported internally while the socket is being formed, - the tube is cooled in the region of the end section, the end section being supported internally during said cooling, and - the support is removed from the tube.
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