Product Description
Impregnated diamond core bits have the widest range of applications. They are the most commonly used drill bits in the mineral exploration industry in medium to very hard formations. The serrated bit can achieve high drilling efficiency when drilling in tight or abrasive formations with low ROP and pressure. Especially effective for coal seams, better water flow and drilling footage can be obtained by using toothed bits.

NQ Diamond Core Bits: Diameter 75.5 / inner diameter 47.6mm.
* F16: Suitable for hard formations, very hard formations. Granite, erythema granite, quartz granite and other hard whole rock. With the advantage of fast penetration.
* F10: The common crown shape. Suitable for broken rock, soft rock formation, limestone, sand egg layer, gravel and other hard rock in the whole rock. With the advantages of fast penetration ,long service life and wearing resistant ,etc.
Basic Info
| Original: Wuxi, China | Certification: ISO9001 |
Price: Negotiable | Model No: NQ, NQ2, NQTT |
Usage: Wireline core barrel parts | Standard: DCDMA |
Payment Term: TT, LC | Delivery Date: Negotiable |
Packing: Export standard | MOQ: 1 PCS |

Size of Diamond Core Bits and Reaming Shells
| Model | Outside Diameter of Core Bit | Inside Diameter of Core Bit | Outside Diameter of Reaming shell | |||
Inches | mm | Inches | mm | Inches | mm | |
BTW | 2.345 | 59.56 | 1.667 | 42.1 | 2.36 | 59.95 |
NTW | 2.965 | 75.31 | 2.218 | 56.1 | 2.98 | 75.7 |
HTW | 3.762 | 95.57 | 2.809 | 71.1 | 3.783 | 96.09 |
AQ | 1.875 | 47.63 | 1.062 | 26.97 | 1.89 | 48.01 |
BQ | 2.345 | 59.56 | 1.433 | 36.4 | 2.36 | 59.95 |
BQ3 | 2.345 | 59.56 | 1.32 | 33.53 | 2.36 | 59.95 |
NQ | 2.965 | 75.31 | 1.875 | 47.63 | 2.98 | 75.7 |
NQ3 | 2.965 | 75.31 | 1.775 | 45.08 | 2.98 | 75.7 |
HQ | 3.762 | 95.57 | 2.5 | 63.5 | 3.783 | 96.09 |
HQ3 | 3.762 | 95.57 | 2.406 | 61.11 | 3.783 | 96.09 |
PQ | 4.805 | 122.05 | 3.345 | 84.96 | 4.828 | 122.65 |
PQ3 | 4.805 | 122.05 | 3.27 | 83.06 | 4.828 | 122.65 |
T2-56 | 2.205 | 56 | 1.642 | 41.7 | 2.224 | 56.5 |
T2-76 | 2.992 | 76 | 2.429 | 61.7 | 3.019 | 76.5 |
T2-86 | 3.385 | 86 | 2.823 | 71.7 | 3.406 | 86.5 |
T2-101 | 3.976 | 101 | 3.295 | 83.7 | 3.996 | 101.5 |
T6-101 | 3.976 | 101 | 3.11 | 79 | 3.996 | 101.5 |
T6-131 | 5.157 | 131 | 4.252 | 108 | 5.157 | 131.5 |
Select Reference Table of Diamond Core Bits

Diamond Core Bits Crown Shapes

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