The hottest major breakthrough in welding coating

2022-09-26
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Major breakthrough in the decoration of welding coatings for the second line of the west east gas transmission project

major breakthrough in the decoration of welding coatings for the second line of the west east gas transmission project

December 8, 2008

[China paint information] five achievements such as X80 steel pipes have been put into industrial production, and six researches such as on-site welding technology of X80 steel pipes have made major breakthroughs

recently, it was learned from China National Petroleum Corporation that during the period of accelerating the construction of the second west east gas transmission line, a national key project, significant progress has been made in the research on the key technologies of the second west east gas transmission line (referred to as the second west east gas transmission line) project, a major science and technology project of PetroChina

among the major scientific and technological special research achievements of the second west east gas pipeline, five new products, including X80 high-grade steel pipes and large-diameter steel pipes, have recently passed the expert appraisal jointly organized by China National Petroleum Corporation and China Iron and Steel Industry Association, and have been put into industrial production. 33 standards have been applied in the second west gas pipeline project, and six studies, including the on-site welding process of X80 steel pipes, have made major breakthroughs, effectively supporting the project construction

in terms of large-diameter, high-grade steel pipes and pipe manufacturing, X80 steel grade with a diameter of 1219 has independent intellectual property rights when exploring the new development path of plastic granulator technology × 18.4mm spiral submerged arc welded pipe, X80 steel grade, diameter 1219 × Five new products, including 22mm longitudinal submerged arc welded pipe and X80 steel grade 2mm, 25.7mm and 32mm hot bends, have been put into industrial production, realizing the localization of X80 steel pipes and bends, and stabilizing the high price of imported steel pipes. The successful development of new products of X80 steel welding wire and flux has made the welding speed reach 1.7 meters/minute, which is 30% higher than that of the west east gas transmission line. At present, carbon fiber body panels or decorative parts are used on ultra expensive sports cars such as steel tube super produced by the production line for more than 1700 meters

in terms of pipes, pipe fittings and construction technical standards, 16 standards for steel plates, steel pipes, elbows, pipe fittings and large deformation steel pipes and 17 engineering construction technical standards have been studied and formulated, which have been applied in the production quality control, acceptance evaluation and construction of plates and pipes in the second west east gas pipeline project, providing a scientific basis for steel pipe ordering, pipeline design, steel pipe production and construction

at the same time, major breakthroughs have been made in six studies, including the development of CYW-1422 vertical hydraulic pipe bender, the research on strain based pipe design method, the development of large deformation longitudinal submerged arc welded pipe, the research on the design method and prevention technology of pipe sections in special geological terrain, the research on the field welding process of X80 steel pipe, and the research on 3PE anti-corrosion coating and coating process. Among them, more than 100 welding processes such as automatic welding, semi-automatic welding, joint welding and repair welding of X80 steel pipes have been studied and formed, which effectively guide the welding construction of the second west east gas pipeline project, so that the qualification rate of automatic welding reaches 98. They all have different functions, and the qualification rate of semi-automatic welding reaches 98.4%

in addition, major scientific and technological projects have made important progress in 18 aspects, such as the research on the control of fracture 1 without tightening experiment, the trial production of elbows and tees, the research on anti-corrosion joint coating, the screening of gas storage sites, the research on integrity management technology, and the research on safety early warning technology. The relevant research results are undergoing engineering tests, which will provide technical support for the construction and safe operation of the second west east gas pipeline project

the major scientific and technological special research projects of the second west east gas pipeline project are aimed at solving the key technical problems in the project construction and safe operation, concentrating the talents, technology and financial advantages inside and outside the system to carry out multidisciplinary joint research. A total of more than 20 scientific research and production units and more than 600 people participated in the research, which greatly improved the overall scientific and technological innovation ability of China's oil pipeline construction and safe operation

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