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Overshot Assembly
SPECIFICATION DESCRIPTION
BWL The coring system produced by our company allows the underground core to beretrieved from the hole by the fishing tool without lifting out the drill pipe,and then the entire inner pipe can be retrieved for sampling and analysis.Improve the productivity of the work site and ensure the safety of the core while drilling.
BWL-U
NWL
NWL-U
HWL
HWL-U
HWL-3
PWL
PWL-3
BTW
NTW
HTW
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