The company introduced European double-wall corrugated pipe production equipmentand technology to produce double-wall corrugated pipe. Besides, the company ownsPE double-wall corrugated pipe production line, which is advanced in domestic market,to produce DN225-DN1200 HDPE corrugated pipe. The company has a total productioncapacity of 20000 tons of various corrugated pipes with high quality. Thecompany can carry out comprehensive test for the characters of pipe, such as ringstiffness, ring suppleness, impact strength, and oven test etc. therefore, thequality of the products is guaranteed. The double-wall corrugated pipe is mainlyused in public facilities, drainage pipe network of residential area, farmlandirrigation, drainage pipe network of chemical plant and sewage treatment plant,low-pressure liquid transmission as well as ventilation and drainage of chemicalplant and mine, and protective pipes for optical fiber cable etc. producing area:China