| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain a protective tube of a power line, or the like whose weight is reduced in order to avoid the abrasion and breakage of a wire. SOLUTION: One side end in the longitudinal direction of the tube 1 of the protective tube A of a power line, or the like whose both ends are opened is used as an insertion tube 1a and the other side end is used as a joint tube 1b into which the insertion tube 1a is inserted for connection. The bottom part of the tube 1 is openably divided 4 in a longitudinal direction, and protruding rims 5 are made to protrude outward integrally from both the divided edges 4a so as to face each other. The whole protective tube A of the power line, or the like has a double-layer structure formed by foamed molding of a synthetic resin and non-foamed molding of a synthetic resin.</p> |
