| 摘要 |
An expandable pipe section (10'), intended to be joined with a corresponding pipe section (10") for use in connection with a well casing of a production well for hydrocarbons, where the pipe section (10') is configured to be screwed on or off an adjoining expandable pipe section (10"), the pipe section (10') at one end being provided with a male end having externally arranged threads (11") and where the adjoining expandable pipe section (10") is provided with a correspondingly shaped female end having corresponding internal threads (11'). The distance between adjacent threads at their widest point is less than the maximum width of a thread. Those parts of the pipe being provided with threads (11', 11") are provided with at least two step wise arranged parts with a cylindrical surface being coaxially arranged with the pipe wall(s).
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