大口径直缝埋弧焊管生产技术与装备的新进展

近年来，随着世界各国经济以及全球油气输送管道建设的空前发展，油气输送用大口径焊管需求量大增．大口径直缝埋弧焊管机组由此得到快速发展，其生产工艺及装备水平均有长足的进步。简要描述了大口径直缝埋弧焊管生产工艺技术及生产装备的新进展，包括引弧板焊接、板边加工、预焊、内外埋弧焊、扩径、水压试验、探伤等工艺技术装备，以及其他方面的技术进步情况。

Fresh Development of Manufacture Technology and Equipment for Large-sized SSAW pipe

Along with the unprecedented development of the global economy and oil/gas transport pipeline system construction,the demand for large-sized weld linepipes for oil/gas transport purpose is increased,which has led to the fast development of the large-sized SSAW pipe mills as manifested by the tremendous progresses con-cerning the manufacture processes and technological level of the equipment. Briefly described in the paper is the newly-made development of the manufacture processes and equipment for large-siz...