| 摘要 |
The cleaning device for the pipeline (6) comprises a rotary tool which can be coupled to a rotary spiral (3) and from the coupling piece (2) of which vane-like knives (1) project radially. The knives (1) here have the same angular spacing from one another and are delimited by a spherical envelope surface (5). Such a rotary tool is capable of following any pipe curvature and is suitable for virtually any pipe interior wall and for any materials to be cleaned out. <IMAGE>
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