| 摘要 |
<p>Laminated tube of glass fibre-reinforced thermosetting resin esp. for transporting waste water, has an intermediate layer of a thermosetting resin contng. an inorg. filler between inner and outer fibre-reinforced resin layers. The intermediate layer terminates at a distance from the end of the tube, and the end part of the tube consists of fibre-reinforced resin material. The tube end is well sealed so that entrance of moisture between the laminated layers is prevented, and delamination does not occur. The pipe has a long useful life.</p> |
