Diamond Core
Diamond Core Bits
Impregnated Diamond Core Bits use natural or synthetic diamonds embedded in a metal matrix, suitable for geological exploration coring in hard to ultra-hard rock, providing complete core samples.
Product Overview
Diamond core bits are the most important coring tools in geological exploration and mining. The impregnated structure uniformly distributes diamond particles in the metal matrix; during drilling, diamonds continuously expose fresh cutting edges, maintaining consistent cutting ability, especially suitable for ultra-hard and highly abrasive rocks.
Our diamond core bits are manufactured by certified partner factories, supporting wireline coring technology — core samples can be retrieved without removing the drill string, significantly improving drilling efficiency. Product specs cover the full E/A/B/N/H/P series, meeting different depth and hole diameter requirements.
Bit Types
Impregnated Diamond Bits
Diamonds impregnated in matrix, continuous exposure, for hard-ultra hard rock
Surface-Set Diamond Bits
Diamonds set on bit face, for medium hard-hard rock
Polycrystalline Diamond Bits
Fine diamond polycrystalline, high abrasion, for ultra-hard rock
Wireline Core Bits
Compatible with wireline coring barrel, no trip for core, high efficiency
Core Advantages
Premium Diamond Quality
Natural or high-grade synthetic diamonds, strong cutting ability
Optional Matrix Hardness
Soft/medium/hard matrix options available for different rock types
Wireline Coring Support
Compatible with wireline system, greatly improving deep hole efficiency
High Core Recovery
Optimized waterways reduce core wear, recovery rate over 95%
Technical Specifications
| Parameter | Specification |
|---|---|
| Bit Diameter | 28mm - 146mm |
| Standard Sizes | E / A / B / N / H / P Series |
| Diamond Grit | 25-60 mesh / 60-80 mesh |
| Applicable Rock | Hard to Ultra-Hard Rock |
| Drilling Method | Wireline / Conventional Coring |
| Matrix Hardness | Soft / Medium / Hard |
Coring Size Reference
| Size | Hole Diameter (mm) | Core Diameter (mm) | Application |
|---|---|---|---|
| E | 37.6 | 20.6 | Shallow exploration |
| A | 47.6 | 28.6 | General exploration |
| B | 59.6 | 38.6 | Base exploration |
| N | 75.3 | 47.6 | Deep hole exploration |
| H | 98.8 | 63.5 | Large diameter coring |
| P | 122.6 | 85.0 | Extra large diameter |
Diamond Grit Selection
| Grit Size | Mesh | Applicable Rock |
|---|---|---|
| Coarse | 25-60 mesh | Soft-medium hard rock |
| Medium | 60-80 mesh | Medium hard-hard rock |
| Fine | 80-120 mesh | Hard-ultra hard rock |
Application Areas
Geological Exploration
Metal mining, coal, oil & gas geological surveys
Mining
Mineral exploration, reserve evaluation, grade analysis
Oil & Gas Exploration
Formation evaluation, reservoir analysis
Engineering Survey
Tunnel, foundation, dam foundation investigation
Scientific Research
Earth science research, rock analysis
Water Source Exploration
Groundwater resource survey
