Application of New Technology in West to East Gas Pipeline Project

West to East Gas Pipeline Project is the natural gas pipeline with the longest distance,the biggest pipe diameter,the largest gas transmission volume,the highest pressure,the most compli-cated construction condition and the highest cost.It is the focus of world attention owing to the grand scale of construction.This paper sums up ten aspects of advanced technology applied in West to East Gas Pipeline Project,including rout choice,pipe material,transmission process design,pressure rising system of compressor,construction of large pipeline crossing,automatic welding and inspection,pressure testing and pipeline drying,measurement system and analytical detection system,peak regulating plan,data monitoring and information management.The applications of a series of advanced technology and means have promoted significantly the levels of design,construction and management of our country's large scale gas pipelines.The valuable and abundant experiences of the design and construction of pipeline engineering have been accumulated either.