1) It was used in Beijing Olympic Stadium, Beijing Benz-DaimlerChrysler Automotive Co.. 2) Corrosion resistance to wide range of corrosive media 3) Non-toxic, safe and hygiene, ideal for use in environment friendly water supply-drainage pipeline and gas pipeline. 4) Good sealing and have high resistance to underground movement and loading at pipe end. 5) Good toughness and dimensional stability and impact resistance 6) Easiness in laying. If buried, the pipe can withstand abrupt impact load caused by land subsidence, land sliding, vehicle, etc. With no need to have concrete foundation, and thus pipe installation is quick, construction cost is lessend. 7) Wide application ragne. It can be widely used in gas delivery and distribution pipelines, buried water supply-drainage pipelines, sewerage system, etc...