circular butt welding 圆周对接焊
circular seam welding 环缝对接焊
circular seam-welding machine 环形滚焊机
NC machine is used to ensure that longitudinal and circular weldings are produced at a constant speed and the welding point is always in flat position.
数控主机用于保证箱底纵、环焊缝焊速恒定并使焊接点始终处于平焊位置。
Such factors as structure design and welding method are taken into consideration to prevent bottom plate of large circular storage tank made of steel from deformation during welding.
为防止大型圆筒形钢制贮罐底板的焊接变形，可从底板的结构设计、焊接方法等方面加以解决。
The automatic control system of circular seam welding process for non - rotated pipeline was developed in the paper.
建立了非旋转管道环缝焊接自动控制系统，并介绍了其系统结构和工作原理。
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