LSAW pipe; Image processing; Pattern recognition; Machine vision; Ellipse.
直缝焊管；图像处理；图形识别；机器视觉；椭圆。
Pre-bending machine is one of the most important facilities in the production of LSAW pipe with larger diameter.
预弯边机是大直径直缝埋弧焊管生产线的关键设备之一。
Then the strain aging behavior of X80 grade LSAW pipe body was conducted a test simulation and the result coincide with the former analysis.
对X80钢级直缝埋弧焊管管体的应变时效行为进行了试验模拟，结果与分析相吻合。
It also raises the necessity that China shall build LSAW pipe production line and produce wide and thick plate for pipeline steel in 21 century.
提出了2 1世纪中国建设大口径直缝埋弧焊钢管生产线及管线钢用宽厚板国产化的必要性。
The characteristic of pipe manufacturing technology and its unique heat-treatment pipe for pipeline for production units and processes of Russian LSAW pipes and SSAW pipes is introduced.
介绍了俄罗斯直缝埋弧焊钢管和螺旋缝埋弧焊钢管的生产设备和工艺等制管技术以及独特的热处理管线钢管的特点。
Baosteel's UOE mill is the first modern large-diameter longitudinal submerged-arc welded (LSAW) pipe unit in China. It is also an advanced production line of the same kind in the world.
宝钢UOE机组是我国第一套现代化大口径直缝埋弧焊管机组，也是世界上装备最先进的大口径直缝埋弧焊生产线。
The grade X65 pipeline steel used for LSAW submarine line pipe has been developed at Baosteel, which is produced by hot continuum rolling processing.
宝钢开发以热连轧方式生产用于制造直缝埋弧焊管的海底管线用x 65级管线钢板，其产品具有高强度、高韧性和良好的焊接性等综合性能。
The grade X65 pipeline steel used for LSAW submarine line pipe has been developed at Baosteel, which is produced by hot continuum rolling processing.
宝钢开发以热连轧方式生产用于制造直缝埋弧焊管的海底管线用x 65级管线钢板，其产品具有高强度、高韧性和良好的焊接性等综合性能。
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