PVC-U pipe for water drainage

PVC-U pipe for water drainage PVC-U new compound spiral muffler pipe 1. Pipe wall of new-type PVC-U composite spiral muffler pipe has three composite structure, smooth wall both inside and outside, and the middle layer by adding nano-materials, there is triangular spiral tendons along the pipeline of inside wall. In the course of drainage, the flow drops in twist with the leading of triangular spiral tendons of pipe inside wall, with the double roles of middle layer structure