1.Description
The PQ3, HQ3, and NQ3 diamond core bits represent a premium range of wireline coring tools, engineered to deliver high-integrity rock samples across diverse geological and industrial applications. Designed for compatibility with standard wireline coring systems, these bits excel in extracting intact cores from formations ranging from soft sedimentary rocks to hard metamorphic and igneous rocks, making them indispensable for mineral exploration, geological mapping, geotechnical engineering, and deep borehole investigations.
Key Specifications & Sizing
Each model is precision-manufactured to align with global wireline coring standards, ensuring seamless integration with corresponding core barrels and drilling rigs:
NQ3:
Bit diameter: 75.7mm
Compatible core barrel: NQ3
Optimal drilling depth: 200–500 meters
Ideal for: Medium-depth exploration in limestone, sandstone, and low-grade metamorphic rock. Widely used in civil engineering foundation testing, groundwater surveys, and coal/iron ore prospecting.
HQ3:
Bit diameter: 96.0mm
Compatible core barrel: HQ3
Optimal drilling depth: 300–800 meters
Ideal for: Hard rock formations such as granite, gneiss, and quartzite. Critical for mining exploration (precious metals, industrial minerals) and deep geotechnical investigations for large-scale infrastructure (dams, tunnels).
PQ3:
Bit diameter: 122.6mm
Compatible core barrel: PQ3
Optimal drilling depth: ≥500 meters
Ideal for: Ultra-deep drilling in ultra-hard or abrasive formations like basalt, chert, and fractured hard rock. Essential for deep mineral exploration, geothermal well development, and scientific drilling projects requiring large-diameter, high-quality cores.
2.Product Parameters
| Size | Inner tube Outsidedia.*thickness | Outer tube Outside dia.*thickness | Core Dia. | Bit Size | | BQ | 42*2.5 | 58*6 | 36.4 | BQ | | NQ | 56*3 | 73*6.5 | 47.6 | NQ | | HQ | 73*3 | 93*7 | 63.5 | HQ | | PQ | 93*3 | 114*6 | 85 | PQ | |
3.Detailed Photos
4.Related product
We can also support Core Drilling Machine:
SKID TYPE:
5.Packaging & Shipping
Packing: Seaworthy Packing
Delivery: about 30 days after your down payment.
Company Profile
Glorytek Industry (Beijing)Co.,Ltd., located inBeijing,China, is an integrated corporation specialized in manufacturing and exporting top quality drilling equipment and drilling parts for decades. We are supported and assisted by a highly experienced team of designers and engineers that enable us to complete all the assigned projects successfully as per the specified requirement from our clients.
Our products are widely used in the scope of mining, water well drilling and exploration, anchor grouting project, side slope protection engineering, oil and gas engineering,underwater rock drilling & blasting operations of seaport channel, hydropower project, national defense projects ect.
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High-Wear-Resistant Diamond Core Bits (Suitable for Hard Rock/Complex Formations) Images
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