
Custom bottom expansion double bottom sand fishing drill
The applicable stratum is mainly used for complex stratum such as soil stratum, sand pebble, weathered rock, etc., and the bottom reamer is added to realize large aperture drilling.
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Custom bottom expansion double bottom sand fishing drill
The applicable stratum is mainly used for complex stratum such as soil stratum, sand pebble, weathered rock, etc., and the bottom reamer is added to realize large aperture drilling.
Drill bit diameter 600~2400mm
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