| 摘要 |
<p>There are provided a spirally waved synthetic resin conduit provided with a coupling and a connection structure for such a spirally waved synthetic resin conduit. The synthetic resin conduit is simply configured by a small number of components, has sufficient water and pressure resistances as well as excellent sealing properties with no need for any rigid material or high accuracy, achieves the reduction in weight and cost, and is easily handled with facilitated connection work on site. In such a spirally waved synthetic resin conduit provided with a coupling, which includes a receiver opening 4 provided at an end of the conduit and connected to another spirally waved synthetic resin conduit, the receiver opening 4 is formed with a foamable resin into a cylindrical shape so as to extend from the end of the spirally waved synthetic resin conduit in an axial direction of the conduit, and an FRP layer 8a is formed by impregnating reinforcing fibers with a resin, at least on an outer peripheral surface of the formed receiver opening at a connection end.</p> |
