140mm PDC Drill Bit
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China Manufacturer 140mm Four Wings Arc PDC drill bit PDC Blade bits for Mining
Type: 140mm 4-Wing Arc PDC drill bit
The 140mm diameter is specifically favored in geothermal ground-source heat pump (GSHP) installations where 140mm boreholes match the standard borehole heat exchanger (BHE) casing diameter.
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