| 摘要 |
<p>PURPOSE:To prevent water leak and rain water infiltration and perform unforced height adjustment at the connecting time to branch pipes so as to facilitate construction by improving the connecting structure of a fitting pipe of a concrete inlet. CONSTITUTION:In order to be positively connected to the opening part 2 of a concrete inlet 1, a flexible joint is formed of a metal ring 9 integrally joined to the concrete end face of the opening 2, and a connecting tube 11 made of a polymeric elastic body such as natural rubber and synthetic rubber and integrally joined to the metal ring 9. A fitting pipe 7 is then connected to this flexible joint.</p> |
