Diamond core drill bits for geological exploration, mineral survey, water well drilling and engineering investigation. Available in single-tube, double-tube and wireline configurations with formation-matched matrix hardness.
A versatile wireline core bit for both geological exploration and water well drilling — fast penetration with consistent tool life.
Purpose-built for wireline coring. Working with standard wireline barrels and inner-tube assemblies, it allows core retrieval without pulling the full string, sharply reducing tripping time and lifting productivity in deep holes. The NQ size fits standard NQ/HQ/PQ wireline series.
Key features: · Fits wireline barrels and inner tubes · Fewer trips, high deep-hole efficiency · Smooth bore for easy core entry · Matrix and concentration matched to formation
All products use premium diamond grit and imported matrix powders, processed by hot-press sintering, laser welding and piece-by-piece inspection. Hardness, density and bond strength are sampled before shipment to guarantee batch-to-batch consistency.
OEM/ODM supported: dimensions, matrix hardness, diamond concentration, threads and connections can be customized to your drawings or rock conditions. Neutral packing and private label available; samples in 7–15 days.
Factory-direct pricing with no middlemen. Our technical team advises on model selection and drilling parameters. Fast delivery with ample stock of standard sizes.
Wireline design that cuts tripping time in deep-hole operations
Impregnated diamond matrix with hardness customised to the rock formation
High core recovery rate that preserves complete formation information
Ample stock for standard sizes, with an average lead time of about 10 days
Annual Production Capacity: 5,000,000 sets / year
Custom Manufacturing: OEM / ODM / Buyer Label
Delivery Terms: FOB · CFR · CIF · EXW
Payment Methods: T/T · L/C · D/P D/A · Western Union · PayPal · Credit Card
Languages Spoken: English · 中文
Response Time: ≤ 10 h · Response Rate: 94.44%
Description from the Supplier
The following content is provided by the manufacturer, covering product features, factory advantages and how to work with us.
Product Description
Diamond Core Drill Bits · NQ Wireline Impregnated Diamond Core Drill Bit for Geological Exploration and Water Well Drilling
Impregnated diamond core bits are made from very small, high-quality synthetic diamonds evenly mixed through a metal alloy matrix. The matrix wears at the same rate as the diamonds become dulled and rounded, so fresh sharp diamonds are constantly exposed to keep cutting the rock. In most geological formations impregnated bits are more economical than other types.
Standard gauges cover AQ/AWG, BQ/BWG, NQ/NWG, HQ/HWG, PQ and the T2/T6 series, with thin-wall electroplated and vacuum-brazed engineering types available on request. Wireline connections are standard; diameter, matrix hardness and diamond concentration can be tailored to your rig and formation.
Product Advantages
More than 20 years of professional experience in diamond tools; the factory has been producing synthetic diamond tools since 2009.
Factory-direct supply: we are the manufacturer, with no middleman — better prices at the same quality.
High-grade raw materials: imported cobalt and nickel powders and high-quality diamond single crystals, with a formula validated by testing.
Advanced processes and strict inspection: hot-press sintering, vacuum brazing and laser welding, with piece-by-piece inspection and sampling of hardness, density and bond strength.
Efficiency and life: PDC anchor bits last 10–30 times longer than tungsten-carbide bits and raise efficiency by about 60%; impregnated bits drill fast with a long service life.
Full range and customization: AQ–PQ and T2/T6 series, common sizes 24–600 mm; matrix hardness, diamond concentration, threads, packing and buyer labels can all be customized (OEM/ODM).
Fast response and reliable lead time: enquiries answered within 10 hours, about 7 days delivery when the mould is ready and about 12 days when a new mould is required.
Packing & Delivery
Standard packing is an inner box in a thick export carton; neutral packing or your own packing method is available on request. Port of shipment: Guangzhou / Shenzhen. Trade terms: FOB, CFR, CIF, EXW. Payment: T/T, L/C, D/P, Western Union and PayPal.
Quality & Service
We are the manufacturer: 100% original products, reasonable prices and attentive service. At the same quality our price is the best; at the same price our quality is the best. If any quality problem occurs, contact us and we will take responsibility for it.
Different markets require different quality and sizes; we can produce bits, segments and accessories in any size and quality to your requirement.
Company Profile
Hunan Jincheng Tools Manufacturing Co., Ltd. was established in 2009 as an innovative manufacturer specialized in synthetic diamond tools. The factory is located in Anfu Industrial Park, Linli County, Changde, Hunan, covering 20,000 square metres, producing "Jincheng (JC)" brand diamond geological drill bits, PDC bits, tricone bits and diamond saw-blade segments.
Taking "improve the application value of diamond, promote the progress of the tool industry" as its mission, the company stays market-oriented, treats reputation as its life and quality as its foundation, continually develops new technologies and products, applies total quality control and serves customers with reliable products and a strong sense of responsibility. You are welcome to visit our factory and discuss cooperation.
Contact: Mr. Steven Tang (General Manager) · Tel +86 736-5805333 · Mobile/WhatsApp +86 159 7366 2165 · Email hnjctools@163.com · Address: Anfu Industrial Park, Linli County, Changde, Hunan, China
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