| 摘要 |
The invention relates to a method for laying plastic composite jacketed pipes in the ground, in particular for district heating, without thermal prestressing during laying, a certain number of pipes being welded together, after which the expansion device is provided, the sleeves are insulated, the earth is placed on top, the pressure test is carried out and, upon commissioning of the pipeline, the pipes are, after the closure of the expansion gaps, welded together at this point. <IMAGE>
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