| 摘要 |
The present invention is directed toward a method for replacing or lining existing underground pipe. The present invention replaces the pipe between two manholes without the need to dig associated trenches. A diagonal pilot hole is formed by a piercing tool. A guide cable is passed through the existing pipe and pilot hole and attached to a ramming tool operative in bringing new pipe through the pilot hole, and into the existing pipe. The ramming tool bursts the existing pipe into the surrounding soil and replaces the existing pipe with the new pipe.
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