西气东输工程是国家实施西部大开发战略的标志性工程 ,为了保证工程的施工进度和施工质量 ,该工程要求在平原地段采用全位置自动焊工艺。全位置自动焊工艺是目前国际管道施工中的一种重要的、较先进的施焊工艺 ,具有焊缝质量好、焊接效率高等优点 The project of West-East Gas Pipeline is a landmark project of the state to implement the strategy of developing the western region. In order to ensure the construction schedule and construction quality of the project, the project requires the use of full-position automatic welding technology in plain areas. All-position automatic welding process is currently an important international pipeline construction, more advanced welding process, with good weld quality, welding efficiency advantages