Ben Hai Yuan, Ruixia Zhu
Papers # 2016 Berlin
THE SOUTH-TO-NORTH WATER DIVERSION PROJECT IN CHINA IS ONE OF THE LARGEST WATER TRANSFER PROJECTS IN THE WORLD. IN 2014-2015, 17.296KM DN800MM PVC PIPES AND FITTINGS HAD BEEN SUCCESSFULLY USED IN THE SECTION OF THIS PROJECT LOCATED AT RAOYANG BRANCH LINE OF HEBEI PROVINCE. IN ORDER TO SOLVE THE CORROSION PROBLEM, THE NEW-TYPE LARGE DIAMETER FITTINGS FOR PVC PIPES ARE DEVELOPED. THE NEW FITTINGS HAVE EXCELLENT PERFORMANCE AND LONG SERVICE LIFE, WHICH ENSURES THE DURABILITY OF THE WHOLE PVC PIPING SYSTEM MORE THAN 50 YEARS.
The South-to-North Water Diversion Project in China is one of the largest water transfer projects in the world. Ultimately it aims to channel 44.8 billion cubic meters of fresh water annually from the Yangtze River in southern China to the north and northwest of china, it includes three routes: the eastern, the central and the western. The project has a total length of 4350km for main line. It will change the situation of flooding in South and drought in North China, and will relieve serious water shortage in north China.
In 2014-2015, 17.296km dn800mm PVC pipes and fittings had been successfully used in the section of this project located at Raoyang branch line of Hebei province. The success of this project not only enriches the application of large diameter PVC pipes in the field of water supply, but also lays a solid foundation for the innovation of the innovative large diameter fittings.
The development of the new-type large diameter fittings has effectively solved the corrosion problem, makes the fittings reach the same service life with the PVC pipes, and ensures the durability of the whole piping system more than 50 years.