The polyethylene is human safe and chemically stable thermoplastic. Such outstanding feature of PE as nontoxic and non corrosive material makes it best choice for running water pipelines. In addition, high impact resistance and strong tensile compared to weight lead to versatile utilization in many industrial application.
The polyethylene is ductile material and its shape adopts to external forces. When ground subsidence is under progress where PE pipe is buried the PE pipe deforms and absorbs soil pressure to some extent, and this results in long term reliable operation. Additional benefit can be found in many documents including product guides.