HDPE double-wall corrugated pipe DN400 (also known as polyethylene double-wall corrugated pipe DN400) is a special structure of the pipeline, the outer wall is corrugated, the inner wall is smooth, made of HDPE material processing, both good flexibility and structural strength, light weight, easy handling and installation process, can adapt to different terrain environment, with the same type of pipe and fittings better adaptability. As a specific specification product, DN400 refers to the nominal diameter of the pipeline is 400 mm. The ring stiffness and other parameters of this specification of the pipeline are suitable for the transportation needs of large flow. It can be used in combination with other specifications of HDPE double-wall corrugated pipes according to the drainage or water transportation requirements of the actual project to form a complete pipeline system. It can be used to collect and discharge a large amount of rainwater and sewage in the drainage project of the main municipal road; in the drainage system of large residential quarters, it can efficiently deal with the discharge of centralized domestic sewage; in the main drainage pipe network of the industrial park, it can also meet the transportation needs of large volumes of industrial wastewater. As a manufacturer, we support the wholesale business of this specification product, the price is reasonable, if there is a demand, you can contact 13339996652 for details.