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PQ Wireline Diamond Bits Impregnated Tube Core Bits Core Drilling Tools
Product information:
Core diamond drilling tool for drilling rock in underground soil
formations which includes an outside pipe and an inside pipe
therein that can be conveyed separately to the surface.
The inside pipe includes a core-receiving receptacle at its lower
end, and at its upper end is provided with a measurement unit for
on-site acquisition, processing and storage of data, such as
borehole, core and/or drilling process parameters.
Application:
Core drilling bits are mainly tools used to drill holes in steel
plates and other products, hollow core bits are used in conjunction
with machines that are specifically on core drilling bits.
Thin-walled diamond core drill bits: concrete core samples are
drilled directly into the structural concrete and processed for
compressive strength testing, this method is recognised as a more
intuitive and reliable test method for testing the strength of
concrete
Specifications:
Size | Outside diameter(mm) | Inside diameter(mm) |
AQ | 47.75/47.50 | 27.10/26.85 |
BQ | 59.69/59.44 | 36.52/36.27 |
BQ3 | 59.69/59.44 | 33.65/33.40 |
NQ | 75.44/75.19 | 47.75/47.50 |
NQ2 | 75.44/75.19 | 50.80/50.55 |
NQ3, NQTT | 75.44/75.19 | 45.21/44.96 |
HQ | 95.76/95.38 | 63.63/63.38 |
HQ3, HQTT | 95.76/95.38 | 61.24/60.99 |
PQ | 122.30/121.80 | 85.09/84.84 |
PQ3 | 122.30/121.80 | 83.18/82.93 |
Advantages:
Surface-Set diamond bits are primarily recommended for use in
drilling relatively soft, abrasive, unconsolidated formations that
are not effectively drilled by impregnated diamond bits. They are
also recommended for use in drilling harder formations where the
available rotational speeds and bit loads are insufficient to use
impregnated diamond bits due to drilling equipment limitations.