AQ, BQ, NQ, NQ3, HQ, HQ3, PQ, PQ3
Core Drill
Metal Drilling, Core Drill
ISO
Bq Bq3 Nq Nq2 Nq3 Hq Hq3 Pq Pq3
Diamond
Geotechnical/Mining Exploration
Sinter
Diamond Core Bit
Rock Core Drilling
Drilling Equipment
F1-F12
Geological Survey
Finish Smooth
Impregnated Diamond Bit
Clay,Hard Sandstone,Syenite,Quartzite,etc
12mm
Nqhqpq
Natural Surface and Impregnated
BEST
Carton/Wooden Case
BQ, NQ, HQ, PQ
Wuxi China
82071910
Product Description
Diamond Tool Core Drill Bit for Geological Exploration Rock Coring Drilling with Type NQHQPQ
Exploration is a very important way to identify if the rock contains any interesting minerals, also it can be used for construction industries,diamond core drilling is one of the common method to do such drilling and get the core samples from rock and soil, the samples will be sent for analysis. In the process of drilling, high performance bit is a key factor for scientific and professional drilling.

High-Quality Materials: Our diamond drill bits are made from high-grade industrial diamonds, ensuring outstanding performance under various rock and geological conditions
Superior Cutting Performance: With advanced manufacturing techniques and scientific design, our drill bits possess excellent cutting abilities, efficiently penetrating hard rock layers and improving work efficiency.
Strong Durability: Our drill bits undergo rigorous quality control, featuring excellent wear resistance and impact resistance, which leads to a longer lifespan and reduced replacement and maintenance costs.
Diverse Options: We offer a variety of specifications and models of diamond drill bits to meet the needs of different geological exploration projects. Whether dealing with soft soil layers or hard rock formations, we provide the right drill bit for your project.
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 |







Carbon bit choice chart
Rock Type | Rock Hardness | Abrasiveness | Hardness NO. |
Clay,Shale,Ash Stone,Gypsum,Tuff,Serpentinite,Calcite, Coal,Argillite,Volcanics,Sandly Pebble | Soft | Medium | BST 1/3 |
Sandstone,Lithoid Limestone, Limonite | Medium Soft | Very High | BST 3/5 |
Medium Hard Sandstone,Hard Shale, Hard Ash Stone,Dolomitic,Marble,Hard Schist, Hard Streak Stone,Siltstone,Andestite | Medium | High | BST 5/7 |
Peridotite,Gneiss,Limonite | Medium Hard | Medium High | BST 7/9 |
Pegmatite,Schist,Norite,Syenite,Gabbro,Peridotite, Grandiorite,Granite,Basalt,Hard Streak Stone | Hard | Medium To Low | BST 9/11 |
Amphibolite,Diorite,Rhyolite,Quartzite | Very Hard | Medium To Low | BST 11 |
Silicious,Hard Sandstone,Rhyolite, Dense Quartzite,Ironstone,Taconite,Jasperite,Chert | Utral Hard | Low | BST 14 |

Diamond Core Bit
Casing Shoe
Diamond Reaming Shell
Drill Rod
Wireline core barrel assembly
Overshot assembly
Water Swivel
Hoisting Plug
Subs
Adapter coupling/locking coupling
Core lifter/core lifter case/stop ring
Wrench
Inner tube stabilizer
Landing ring
Core Barrels kit
Loading chamber


Field Work


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.