| 摘要 |
A pipe, preferably manufactured from a substantially nonflexible and rigid material, which as a continuous pipe length includes portions having a substantially smooth surface (1, 1', 2, 2'), divided from each other by means of intermediately located and from the pipe length shaped portions (3, 3', 3''), which are arranged to take up axially directed displacement movements for adjacently located smooth portions (1, 1', 2, 2') and/or changes in angular orientation for said adjacently located smooth portions (1, 1', 2, 2'). The intermediately located portions (3, 3', 3'') are advantageously arranged as waveshaped or creased portions, partly surrounding the pipe length, alternatively as spaced but adjacently located waves or creases having an annular extension, or also as adjacently located waves or creases having a joined and helical line of extension. The intermediately located portions may also be arranged as embossments, spaced from each other and displaced in relation to each other in adjacently located turns. Each intermediately located portions (3, 3', 3'') includes at least one substantially smooth surface, extending in longitudinal direction of the pipe. |
