传统的长输管道建设都是采用焊接方法来连接管子，而美国的“巴特列尔”公司成功地研制出一种新的机械连接工艺系统，可以不用焊接实现管道建设。与传统的方法相比，该工艺在施工作业中具有简单、清洁、劳动生产率高、经济等优点，而且可以不受气候的影响。该方法已在美国申请专利，已被多个国家应用，并取得了巨大的经济效益 Traditional long-distance pipeline construction uses welding methods to connect pipes, while the United States “Bartrel” company successfully developed a new mechanical connection process system, you can not pipe the construction of the pipeline. Compared with the traditional method, the process has the advantages of simplicity, cleanness, high labor productivity, economy and other advantages in the construction operation, and can be free from the influence of the climate. The method has been applied for a patent in the United States, has been applied in many countries, and achieved great economic benefits