Diamond Core Drilling Tools
Maximum Core Recovery in the Most Challenging Formations
Precise geological data begins with a high-quality core sample. Our diamond core drilling tools are engineered to provide exceptional penetration rates and long bit life across diverse ground conditions. From impregnated diamond core bits to surface-set bits and reaming shells, Gdrills offers a complete wireline system compatible with international standards (Q series: BQ, NQ, HQ, PQ).
Designed for mineral exploration, site investigation, and deep-hole coring, our tools ensure you get the best "meters per bit" in any hardness (Scale 1-10).
Why Choose Us
Our certificates
We have established a complete quality management system and passed ISO9001 quality management system certification and ISO14001 environmental protection management system certification.
Production market
Our products have been used in many large-scale mines and tunnel projects, and our business scope covers Africa, the Middle East, Central Asia, South America, Australia and other regions.
Our services
Our support extends across pre-sale, on-sale, and after-sale services, ensuring that customers receive professional guidance, reliable solutions, and timely assistance.
How to Choose the Right Top Hammer Tools?
To ensure compatibility and performance, please refer to the technical specifications below:
|
Thread Type |
Typical Application |
Compatible Equipment (Drifters) |
Common Bit Diameters |
|
R25 / R28 |
Short hole drilling & Bolting |
Small hydraulic drifters |
33mm - 45mm |
|
R32 |
Drifting & Tunneling |
Light-duty rock drills |
43mm - 51mm |
|
T38 |
Bench drilling & Long-hole mining |
Medium-duty rock drills |
64mm - 76mm |
|
T45 |
Large scale bench drilling |
Heavy-duty rock drills |
76mm - 102mm |
|
T51 / GT60 |
Deep hole production drilling |
High-power hydraulic drifters |
89mm - 152mm |
Depth & Application
Gdrills provides a total solution for Mineral Exploration and Site Investigation. Our wireline systems are engineered for depths exceeding 1,500 meters, ensuring consistent core samples in everything from soft sedimentary layers to ultra-hard igneous formations.
Applications: Gold/Copper Mining, Dam Construction, Deep Well Investigation.
System Interaction: Bits & Barrels
For successful coring, the Core Barrel, Casing Shoe, and Reaming Shell must work in perfect harmony.
The Diamond Bit cuts the core.
The Reaming Shell stabilizes the string and maintains the hole gauge.
The Casing Shoe protects the borehole from collapsing in overburden conditions.
All components are ISO 9001 Certified and meet DCDMA/CDDA standards for 100% field compatibility.
Selection Recommendations: Core Material Selection for Hard Rock and Soft Rock
For Hard/Abrasive Rock (Granite)
Select our High Diamond Grade bits with a softer matrix (Series 2-6) to ensure constant self-sharpening.
For Soft/Broken Rock (Shale)
Use a harder, erosion-resistant matrix (Series 10-12) to prevent the bit from wearing out prematurely before the diamonds are spent.
Why Professionals Choose Gdrills Consumables?
Superior Alloy Steel
We utilize high-grade structural alloy steel equivalent to international standards (Sandvik grade), ensuring the body of the tool has the toughness to resist fatigue.
Advanced Carburization Process
All our shank adapters and drill rods undergo deep vacuum carburization. This increases surface hardness to HRC 58-62, providing exceptional wear resistance while maintaining a flexible core.
Precision CNC Machining
Threads are the most critical failure point. Our CNC-milled threads ensure a tight, perfect fit, reducing energy loss and preventing premature thread stripping.
Premium Tungsten Carbide Inserts
Our button bits feature "Made-in-Germany" or premium domestic tungsten carbide, offering different shapes (Spherical, Ballistic, Conical) for various rock hardness levels.
Package and Shipping
|
Packing |
Cartonbox, plastic bag, wooden case. |
|
Shipping |
Shipped by road, sea, rail |
Q: What is a diamond core drill used for?
A: Diamond Drilling is utilised in any situation where precise holes are required including creating large openings for ducts, smaller holes for pipes or wiring, creating holes for the placement or anchoring bolts, or even for concrete sample analysis. Holes can be created to an almost unlimited depth.
Q: What are the advantages of diamond core drilling?
A: Diamond core drilling besides being faster and more effective than normal drilling, is far superior in producing high-quality and accurate holes in a safer manner with less noise and less dust production.
Q: Do you provide core barrels and drill rods in different sizes?
A: Yes. Gdrills supplies a full range of sizes including BQ, NQ, HQ, PQ, as well as custom dimensions for specific drilling applications.
Q: What is the difference between wireline and conventional core drilling??
A: Wireline drilling allows the inner tube and core to be retrieved without removing the entire drill string, making it faster and more efficient, especially in deep drilling. Conventional drilling requires pulling out the entire drill rod string for each core run.
Q: How do I choose the right diamond core bit?
A: Selection depends on formation hardness, abrasiveness, drilling speed, rig capacity, and desired core recovery. Gdrills provides professional recommendations based on your project details.
Q: What formations are diamond core tools suitable for?
A: Diamond core tools can drill through soft, medium, hard, and extremely hard formations. The diamond grade, matrix hardness, and design are selected based on the specific ground conditions.
Q: How do I choose between Ballistic and Spherical buttons?
A: Ballistic buttons are ideal for soft to medium-hard rock where high penetration speed is the priority. Spherical (Domed) buttons are better suited for hard, abrasive rock as they offer higher durability and resistance to shearing.
Q: What causes premature thread failure in extension rods?
A: Most thread failures result from insufficient coupling tightness or mismatched thread profiles. We recommend using high-quality thread grease and ensuring the rod is fully seated in the coupling or shank to prevent "un-coupling" impact.
Q: Are your tools compatible with my existing Sandvik or Epiroc rigs?
A: Yes. Our tools are manufactured strictly according to international standard dimensions. Our R32, T38, T45, and T51 threads are 100% interchangeable with major global brands.
Need a complete technical catalog?
Can't find the specific model you need? We offer customized solutions tailored to unique geographical challenges.
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