| 摘要 |
PURPOSE: A drainage pipe is provided to connect drainage pipes simply and solidly by packing cement mortar in the outer wall of a synthetic resin-drainage pipe. CONSTITUTION: An outer guard(7) is wound around an inner wall, and a space part in which cement mortar is packed is formed. A reinforcing steel(5) and an auxiliary steel reinforcing(5a) are disposed to the space part. An input port(4) is formed on a side of the outer guard. A filling part for input of cement mortar is formed to the longitudinal connecting portions by exposing the reinforcing steel and auxiliary steel reinforcing. A passing inlet passing through the outer guard has a passage in the middle part. A vibrating plate is attached to the outer guard, to input cement mortar. Thus, mortar input work is easily performed and connecting work is simply performed.
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