焊接管道 meaning in English

welded pipe line

The application of new non - welded pipeline on petroleum machinery
新型无焊接管道技术在石油机械中的应用
Standard practice for ultrasonic examination of the weld zone of welded pipe and tubing
焊接管道焊接区域的超声波检验标准实施规程
Preparation of welds ; matching of inside diameters for circumferential welds on welded pipes
焊缝预加工.第3部分:焊接管道圆周焊缝的内径配合