中国X80管线钢和钢管研发应用进展及展望

随着油气管道建设的快速发展,X80管线钢及钢管得到了大规模应用。回顾了中国X80高钢级管线钢及钢管的研发应用历程与主要进展,指出了面临的挑战,提出了发展建议。经过近20年的发展,建成X80油气输送管道约17000 km,单管输气量达到380×10^8 m^3/a,X80管材生产及管道建设技术进入国际领跑者行列。形成了X80管线钢及钢管组织分析鉴别与评定、强度试验与屈强比控制、断裂与变形控制等关键技术,以及X80系列热轧板卷与大口径厚壁螺旋埋弧焊管制造技术、宽厚板与大口径厚壁直缝埋弧焊管制造技术、大应变管线钢及钢管制造技术、感应加热弯管及管件设计与制造技术。有力支撑了西气东输二线、中俄东线等重大管道工程建设。对于未来发展,提出如下建议:加强对制管用板卷或钢板的可焊性评价与控制,深化现场焊接技术及质量性能控制研究,推进高钢级管线钢及钢管在大输量管道建设中的应用,强化油气管道失效控制、完整性理论与技术的研究及应用。(参69)

Progress and prospects of research and application of X80 pipeline steel and steel pipe in China

With the rapid development of oil and gas pipeline construction,X80 pipeline steel and steel pipe have been applied on large scale.The research and application history and main progress of X80 high-grade pipeline steel and steel pipe in China were reviewed,the challenges faced were pointed out,and the suggestions for development were put forward.After nearly 20 years of development,about 17000 km of X80 oil and gas transmission pipelines have been constructed,with the single pipeline capacity up to 380×10^8 m^3/a.China’s X80 pipe manufacturing and pipeline construction technology have also ascended to the ranks of international leaders.Key technologies such as microstructure analysis,identification and assessment,strength test and yield to tensile ratio control,fracture and deformation control of X80 pipeline steel and steel pipe have been formed,as well as manufacturing technologies related to the X80 hot-rolled coiled sheet and large diameter thick wall spiral submerged arc welding pipe,wide and thick plate and large-diameter thick-wall longitudinal submerged arc welding pipe,high strain pipeline steel and steel pipe,and the design and manufacturing of induction bends and fittings.These technologies have strongly supported the construction of major pipeline projects like Line 2 of West-to-East Gas Pipeline Project and the China-Russia Eastern Gas Pipeline Project.For future development,the following suggestions were put forward.It was suggested to strengthen the weldability assessment and control of coiled sheet or steel plate,deepen the research on field welding technology and quality performance control,promote the application of high-grade pipeline steel and steel pipes in the construction of large-capacity pipelines,and improve the research and application of theory and technology on failure control and integrity of oil and gas pipeline.(69 References)