| 摘要 |
A sewage basin combined PVC manhole is provided to functions as manhole and sewage basin as well at the part of a water supply pipe, where a PVC pipe is connected. A sewage basin combined PVC manhole comprises an exterior guide unit(14) combined on the exterior of a manhole protrusion formed on the manhole body, a polygonal body(11) in which a fastening groove is formed on the inside surface and a polygonal pipe(39) is connected, an inside member which is combined to the fastening groove and has an inside support part(21), and a core member which is combined on the outside of the inside support part and has a core protrusion combined on the inside of the manhole protrusion. |
