| 摘要 |
A fire protection sleeve (1) for a pipeline (4), which extends through an opening (2) in a wall (3), is surrounded circumferentially at least partly by intumescing material (10) contained in a fire-resistant folded fabric tube (5). The fabric tube (5) forms several circumferential, unilateral inner folds (6) and the folds (6) are sewn in each case with a yarn (8), to an opposite side of the tube, and the yarn melts or burns in the event of a fire.
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