| 摘要 |
A plastic coupling pipe part for connecting corrugated plastic pipe comprises abutment projections and a radially resilient displaceable lip, carrying an inwardly directed cam. The lip is surrounded by openings delimited by a rectangular incision in the plastic pipe. The transition part connecting the lip with the pipe wall has a smaller width than the end edge of the lip. In a pipe connection with such a coupling pipe part the coupling cam engages a flank of a wave valley of a corrugated pipe.
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