摘要 |
Method of weighting of a plastic pipe with a hollow, air- filled wall, a weighted lightweight pipe with a hollow wall, and a pipeline formed by a plu rality of weighted, lightweight pipes which are welded together. According t o the method the hollow wall of the pipe is filled with a flowing medium whi ch displaces air and which increases the weight of the pipe and which thereb y facilitates submerging of the pipe. The flowing medium is suitably a concr ete mix which has delayed hardening and low long-term strength. The concrete mix gives reliable weighting of the pipe without external point loadings. T he binder of the mix prevents segregation of the aggregate and the material thereby becomes evenly distributed inside the wall of the pipe.
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