They are also called PVC drainage pipes, which are insulated and normally prevented flooding. There is 150mm PVC pipes which are lightweight and durable, have a leak-proof construction design, and can prevent floods by preventing floods. PVC pipes are lightweight and durable, PVC insulated and normally with no leak.
Plastic drainage pipes are usually made of PVC coated insulation material, such as PVC Annealing step or the Annealing step. PVC insulated pipes are also available and are used to waterproof water insulators like thermal expanding.