Full Range Impregnated Diamond Core Bits | Premium Coring Bits (BQ, NQ, HQ, PQ) for Wireline Exploration
Unlock peak drilling efficiency across any geological formation with our full range of premium impregnated diamond core bits. Engineered to industry-leading international standards, our coring bits are available in all standard wireline sizes—including BQ, NQ, HQ, and PQ—as well as specialized thin-wall and triple-tube (NQ3, HQ3, PQ3) configurations.
We utilize a proprietary metallurgical matrix that tightly binds high-concentration synthetic diamonds. As drilling progresses, the self-sharpening matrix wears away at a controlled rate, consistently exposing fresh, sharp diamond cutting edges. From highly abrasive quartz and granite to broken ground, our diamond bits are optimized to deliver lower cost-per-meter, higher penetration rates (ROP), and exceptional core recovery.
Our impregnated diamond core bits undergo rigorous high-temperature and high-pressure sintering processes to guarantee uniform diamond distribution throughout the entire crown depth. This ensures consistent, predictable performance throughout the entire lifespan of the bit. They are 100% compatible with all standard international wireline core barrels and reaming shells, making them the preferred choice for global mineral exploration and geotechnical drilling contractors.
Size & Specification Availability
Wireline System
Bit Outer Diameter (OD)
Bit Inner Diameter (ID)
Core Diameter Reference
BQ
60.0mm
36.4mm
36.4mm
NQ / NQ3
75.7mm
47.6mm / 45.1mm
47.6mm / 45.1mm
HQ / HQ3
96.0mm
63.5mm / 61.1mm
63.5mm / 61.1mm
PQ / PQ3
122.6mm
85.0mm / 83.0mm
85.0mm / 83.0mm
Note: Custom oversized dimensions and customized water-way configurations (e.g., Pie-shaped, Face-discharge) can be manufactured to your exact blueprints.
Technical Example: Premium NQ Matrix Details
To give you an idea of our manufacturing precision, here are the detailed specifications for our standard NQ exploration bit configuration:
Diamond Concentration: 100% uniform distribution.
Diamond Grit Size: 50 - 60 Mesh (Premium synthetic crystals designed for intense impact).
Matrix Hardness Reference: K10 series (Expertly formulated for medium-hard to hard abrasive rocks, ensuring perfect self-sharpening properties).
Crown Matrix Profile & Waterway Options
We offer various face profiles to suit your specific drilling parameters:
Standard V-Ring / Pie-Shaped: Best for general coring in solid, homogenous formations.
Face Discharge (FD): Ideal for broken, soft, or friable formations where core washing must be strictly avoided.
Turbo Profile: Enhances penetration speed in ultra-hard, non-abrasive rock types.
Ordering Information
To ensure the longest possible bit life, please inform our sales engineers of:
The Core Size Required: (e.g., BQ, NQ, HQ, PQ).
Estimated Rock Type / Mohs Hardness: (e.g., Granite, Quartzite, Basalt).
Ground Conditions: (Solid, fractured, or highly abrasive).
