| 摘要 |
a) Thermally insulated pipeline tube, with two conductors without any arrangement for expansion, method and device for implementing them. b) Tube characterised in that the supply and return pipes 1, 2 are wired together with a large wiring pitch and in that the feed spools 12, 13 are mounted on a frame-type support 14 whilst a pair of concave rollers 15 are provided at a certain distance from this frame-type support 14 in the zone of action of which the wiring is done. c) The invention relates to thermally insulated pipeline tubes. <IMAGE>
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