Geological drill rods are the core load-bearing components in a core drilling system, responsible for transmitting torque and axial load between the drilling rig and the drill bit while ensuring stable tool guidance. The rods are compatible with NQ, HQ and PQ international standard systems and suitable for wireline core drilling and conventional geological drilling equipment. Manufactured from high-strength alloy structural steel and treated by quenching and surface strengthening processes, the drill rods feature excellent torsional strength, fatigue resistance and thread connection stability, meeting long-term operation requirements in deep-hole drilling and complex formations. They are widely applied in mineral exploration, geotechnical investigation and hydrogeological drilling projects.
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| Geological Drill Rod Engineering Specifications | ||||||||
|---|---|---|---|---|---|---|---|---|
| Series | Outer Dia. (mm) | Inner Dia. (mm) | Wall Thickness (mm) | Length (m) | Material | Thread Type | Max Torque | Application |
| NQ | 69.9 | 58.9 | 5.5 | 3.0 | Alloy Structural Steel | International Standard Taper Thread | ≥ 6.0 kN·m | Shallow to medium-depth core drilling |
| HQ | 88.9 | 75.9 | 6.5 | 3.0 | Alloy Structural Steel | International Standard Taper Thread | ≥ 10.0 kN·m | Medium-depth mineral exploration |
| PQ | 114.3 | 98.3 | 8.0 | 3.0 | High-strength Alloy Steel | International Standard Taper Thread | ≥ 18.0 kN·m | Deep-hole drilling & large-diameter coring |
Tangshan Polarislink Advanced Materials Technology Co., Ltd. was established in 1996 and is located in Tangshan, Hebei Province, China. The company is a source manufacturer specializing in wear parts for mining machinery. Relying on its own core factory, the company has been deeply engaged in heavy manufacturing for nearly 30 years, forming a stable industrial foundation centered on manufacturing capability.
The main products include high manganese steel hammers, jaw plates, bushings, mantles, impact plates, high chromium blow bars, cast steel bushings （Mn13/Mn13Cr2，Mn18/Mn18cr2，Mn22/Mn22Cr2） and various other wear-resistant castings, which are widely used in mining crushing, sand and aggregate production, cement and building materials industries. The company is certified by CE and ISO9001, and is capable of long-term batch supply and high-standard customized delivery.
The manufacturing base covers about 100,000 square meters, with a building area of 36,000 square meters, and is equipped with a complete production system including melting, casting, machining, heat treatment and final inspection. With 11 medium-frequency furnaces of 2–10 tons, 2 refining furnaces of 25 tons, 18 heat-treatment furnaces and more than 30 large CNC machines, the annual comprehensive capacity exceeds 50,000 tons, enabling stable production of large, high-strength and high-wear-resistant industrial castings.Official website address:https://www.polarislink.net/
