Method and apparatus for inserting and propelling a coating device into and through live gas pipeline
1. Field of the Invention Joints or other discontinuities in live gas pipelines are sealed by spraying the joint or discontinuity with a coating material by means of an explosion-resistant coating device (), capable of traversing long lengths of pipe (). The coating device is inserted into the pipe...
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| Format: | Patent |
| Sprache: | eng |
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