The problems related to the measurement and control of residual stress in the production of spiral sub-merged arc welding pipe were analyzed based on tests.
在大量试验的基础上，综合论述了螺旋缝埋弧焊管实际生产中有关残余应力的测试与控制问题。
This article describes the whole process of JCOE longitudinal submerged arc welding pipe made from rolling plate.
简述了采用热轧卷板制造直缝埋弧焊接钢管的全过程。
Cold bend welding pipe equipment is indispensable to welding pipe production and cold bend type steel with open or close entrance.
冷弯焊管设备是生产焊管、开口及闭口冷弯型钢必不可少的设备之一。
The reason of the Weld Joint Cracking on high frequency welding pipe was investigated by using macroscopic observation, metallographic technology, fracture analysis and EBSD technology.
本文通过使用宏观观察、金相分析、断口分析和电子背散射衍射（EBSD）等分析手段对高频焊管焊后弯管开裂的原因进行了分析。
The present invention discloses a welding pipe and has simple welding operation, high welding speed and high welding quality.
本发明公开了一种焊接用管，该管和与之相应的管一起焊接可以简化操作，提高焊接速度和焊接质量。
The vertical feed fly saw, equiped on most straight welding pipe sets, can not be suitable to cut square shaped pipes because of serious deformation on the cut face.
当前一些直缝焊管机组所配备的垂直进锯型飞锯因易造成切断端面严重变形，不适合锯切正位生产的方矩型类管材。
The vertical feed fly saw, equiped on most straight welding pipe sets, can not be suitable to cut square shaped pipes because of serious deformation on the cut face.
当前一些直缝焊管机组所配备的垂直进锯型飞锯因易造成切断端面严重变形，不适合锯切正位生产的方矩型类管材。
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