EN
HQUA Wireline Core Drill Rod with Both Ends Upset & Quenched-Tempered
HQUA series integral upset drill rod is high-strength drilling pipe dedicated for medium-deep rock core drilling, solid mineral exploration and deep well hydrological investigation. Adopting one-piece hot forging inner upset forming process and universal industrial technical description, it avoids patent naming and structural copy infringement risks of similar products. It is suitable for drilling operation within 2170m depth, widely used in deep metal mineral exploration, geological mapping, deep engineering survey, deep well drilling and mine underground coring.
Certificates: ISO, RoHS, MSDS
Material: ZT950
Available Lengths: 1m, 1.5m, 3m
Recommended Drilling Depth: 2170m
Description
HQUA series integral upset drill rod is high-strength drilling pipe dedicated for medium-deep rock core drilling, solid mineral exploration and deep well hydrological investigation. Adopting one-piece hot forging inner upset forming process and universal industrial technical description, it avoids patent naming and structural copy infringement risks of similar products. It is suitable for drilling operation within 2170m depth, widely used in deep metal mineral exploration, geological mapping, deep engineering survey, deep well drilling and mine underground coring.
| Basic rod specification: | Outer diameter 90mm, wall thickness 5.5mm |
| Upset section dimension: | Upset inner diameter 77.5mm, upset outer diameter 91mm |
| Recommended drilling depth: | Maximum recommended drilling depth 2170m |
| Main material: | ZT950 high-yield seamless steel pipe for drilling, high mechanical properties adapt to harsh working conditions of high formation pressure and alternating load in medium-deep strata |
| Standard single rod length: | 1.5m / 2m / 3m, customized special lengths available on request |
Specifications
| Model | HQUA |
| Drill Rod Specification (mm) | 90*5.5mm |
| Thickened O.D/I.D (mm) | 77.5/ 91mm |
| PCS/ Bundle | 19pcs |
| Weight kg/ m | 11.6kg/m |
| Core diameter / Hole diameter | 63.6/ 95.5mm |
| Recommendation depth | 2170m |
Product features
1. Integrated Monolithic Upset Structure
The rod body and connecting end are integrally hot forged and upset without secondary welding. The upset end is locally thickened and reinforced with smooth wall thickness transition, eliminating stress concentration, weld cracking and fatigue failure defects of traditional welded drill rods. The flat inner bore ensures smooth flow of drilling flushing fluid and lower running resistance of matched drilling tools.
2. ZT950 High-grade Special Base Material
Made of quenched and tempered ZT950 alloy seamless steel with yield strength ≥950MPa. It has superior torsion, compression, impact and fatigue resistance than conventional DZ series geological drill rods. It resists bending, distortion and fracture during 2170m medium-deep hole drilling, adapting to long-term continuous operation in dense hard rock, broken strata and high-pressure complex rock formations.
3. Precise Tolerance & Stable Deep Hole Operation
CNC precise machining tolerance of upset section perfectly matches supporting locking threads, with tight joint fitting and excellent sealing performance, no leakage and pressure relief of high-pressure flushing fluid. Optimized gradient wall thickness structure disperses alternating stress of rod body, ensures balanced and stable torque transmission at rated 2170m depth, and greatly reduces thread galling, wear and uncoupling faults.
4. Flexible Selection of Multiple Lengths
1.5m short rods adapt to mine tunnels and confined construction sites; 2m and 3m standard long rods match large surface medium-deep drilling rigs, reduce drill rod joint quantity, shorten assembly time, improve overall drilling efficiency and cut joint consumption and equipment maintenance cost.
