- an extremely wide range of application;
- a simple crown geometry that makes them less susceptible to in-hole damage than bits produced with other types of cutting media and as such are more tolerant of changing or banded geological formations;
- their multi-layered cutter arrangement results in better overall bit life than bits produced with other types of cutting media. They are particularly well suited for drilling in hard, consolidated, non-abrasive formations.
In the field of geological exploration, diamond drill bits are indispensable tools known for their exceptional performance and durability. As a professional manufacturer of geological exploration equipment, we are dedicated to providing high-quality, high-performance diamond drill bits to support geological exploration projects worldwide.



Impregnated Diamond Core Bits | AQ, BQ, NQ, HQ, PQ, NQ3, HQ3, PQ3, BWM, BWG, NWM, NWG, NMLC, HMLC, LTK48, LTK60, T246, T256, T266, T276, T286, T2 101, T6 101, T6 116, T6 131, T6 146, B46, B56, B66, B76, B86, B101, B116, B131, B146 |
Surface set diamond bits | AQ, BQ, NQ, HQ, PQ, NQ3, HQ3, PQ3, BWM, BWG, NWM, NWG, T246, T256, T266, T276, T286, T2 101, T6 101, T6 116, T6 131, T6 146, B46, B56, B66, B76, B86, B101, B116, B131, B146 |
Type | AQ/B | BQ/B | NQ/B | NQ3/B | HQ/B | HQ3/B | PQ/B |
O.D(mm) | 47.7 | 59.6 | 75.4 | 75.4 | 95.7 | 95.7 | 122.3 |
O.D(inch) | 1.88 | 2.35 | 2.97 | 2.97 | 3.77 | 3.77 | 4.81 |
I.D(mm) | 27.1 | 36.5 | 47.7 | 45.2 | 63.6 | 61.2 | 85.1 |
I.D(inch) | 1.07 | 1.44 | 1.88 | 1.78 | 2.50 | 2.41 | 3.35 |
Type | PQ3/B | NWM/B | NWG/B | NMLC/B | HMLC/B | NQTT/B | HQTT/B |
O.D(mm) | 122.3 | 59.6 | 75.4 | 75.4 | 98.9 | 75.4 | 95.7 |
O.D(inch) | 4.81 | 2.35 | 2.97 | 2.97 | 3.89 | 2.97 | 3.77 |
I.D(mm) | 83 | 36.5 | 54.8 | 52.1 | 63.6 | 45 | 61.1 |
I.D(inch) | 3.26 | 1.44 | 2.16 | 2.05 | 2.5 | 1.77 | 2.4 |
Best Drilling manufacture and supply various type of core bits:
Impregnated diamond bits
Surface set diamond bits
Tungsten Carbide drill bits
PDC drill bits
Job site:



Q1. Where is your factory?
A1: Our factory is located in Wuxi, Jiangsu, China, it takes only about 2 hours driving from Shanghai.
Q2. How do you control quality?
A2: ISO9001 has been passed. Mill Test Certificate is supplied , meanwhile the Third Party Inspection is available according to customers' requirement.
Q3. What are the advantages of your company?
A3: We have many professionals, technical personnel, more competitive prices and best after-sales service than other companies.
Q4. Can you arrange the shipment?
A4: Yes, of course, we have our forwarders which has cooperated with us for years.
Q5. How about the delivery time?
A5: It will be decided by the orders. Normally within 3 days after receiving your advance payment if we have stock.
Q6. Can you provide sample?
A6: Small samples in store can be provided for free