发明名称 METHOD OF WEIGHTING PLASTIC PIPES AND WEIGHTED PLASTIC PIPES
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.
申请公布号 CA2692261(A1) 申请公布日期 2009.01.29
申请号 CA20082692261 申请日期 2008.07.21
申请人 OY KWH PIPE AB 发明人 HOLM, ALF;VESTMAN, CHRISTIAN
分类号 F16L1/16 主分类号 F16L1/16
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