Research on Domestic Pipeline Automatic Welding Equipment and Application of 3rd West-east Gas Pipeline Project

The domestic automatic welding equipment was upgraded on the basis of pipeline engineering requirements, which is assembled in the engineering unit for pipeline bureau. Then the equipment was applied in the 3rd west-east gas pipeline project. The successfully application could lead domestic automatic welding equipment to a new chapter of widely used in pipeline construction. The engineering application indicates that the overall performance, welding efficiency, environment adaptability and the mutual matching of welding for upgrading domestic automatic welding equipment can be effectively improved. And it can achieve average welding 60 crossing above perday, then a welding qualified rate is greater than 98%. At the same time, it can reduce the labor intensity effectively, human factors on welding quality and the construction cost.