Group strength

Non-excavation construction

Published:

2019-09-29 17:45

Source:

Within the company

Key words: construction contractor

Modern non-excavation engineering non-excavation underground pipeline construction methods have appeared in large numbers since the 1970s, including: horizontally guided drilling, horizontal directional drilling, horizontally controlled auger, impact spear, fistula hammer , micro-channel, old tube replacement and repair, pipe jacking machine, etc.

非开挖施工

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