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Swivels
| Глоссарий по проходческим щитам (тоннелингу) |
Devices placed between the reamer and the duct puller or pulling head to eliminate rotation of the product during pullback.
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Survey tools, английский
Downhole equipment and instruments used to determine the position of a bore in directional drilling or in site investigation.
Back reamer, английский
Cutting head attached to the leading end of a drill string to enlarge the pilot bore during a pull-back operation to enable the product pipe to be installed.
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