| 摘要 |
A conduit including an inner tubular liner comprised of organic polymeric material, an outer case and an intermediate layer of metallic filaments extending alternatively in a first direction and then in a second opposite helical direction about the inner tubular liner. The method of making same comprises the steps of; providing an organic polymeric inner tubular liner, applying a single layer of filaments alternately in a first helical direction and then in a second opposite helical direction continuously about the inner liner, and applying an outer layer thereabout.
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