| abstract |
The invention provides a polyolefin noise-reducing drainage pipe, which includes an external fixing pipe and a noise-reducing pipe. The external fixing pipe includes a first outer pipe and a first inner pipe that are matched and fixed. In an inner pipe, and fixedly connected with the inner wall of the first inner pipe; the pipe wall of the noise reduction pipe is provided with several holes, and the inner wall of the noise reduction pipe is provided with a spiral guide for noise reduction flow ring. On the basis of ensuring good strength and toughness, the polyolefin noise-reducing drainage pipe of the present invention has good sound insulation and noise-reduction functions; meanwhile, the polyolefin drainage pipe has a simple structure and is convenient for manufacture. |