| 摘要 |
PURPOSE: A plastic tube for electric and communication cables is provided to ensure easy handling and installation by being easily bent because inner tubes are connected via thin connection ribs. CONSTITUTION: A plastic tube for electric and communication cables comprises an outer tube(110), a plurality of inner tubes(120), and connection ribs(130). The outer tube is formed by extrusion of a plastic material in the shape of corrugated cylinder. The inner tubes are installed inside the outer tube by being arranged at regular intervals along the circumference of the outer tube. The connection ribs, which are thinner than the outer and inner tubes, connect the inner tubes to the outer tube.
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