EN
NQUA Wireline Core Drill Rod with Both Ends Upset & Quenched-Tempered
NQUA series integral upset drill rod is high-strength drilling pipe dedicated for medium-deep geological drilling, solid mineral exploration and 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 2050m depth, widely used in deep rock core sampling, mine geological exploration, engineering geological survey and deep well hydrological drilling.
Certificates: ISO, RoHS, MSDS
Material: ZT950
Available Lengths: 1m, 1.5m, 3m
Recommended Drilling Depth: 2050m
Description
NQUA series integral upset drill rod is high-strength drilling pipe dedicated for medium-deep geological drilling, solid mineral exploration and 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 2050m depth, widely used in deep rock core sampling, mine geological exploration, engineering geological survey and deep well hydrological drilling.
| Basic rod specification: | Outer diameter 71mm, wall thickness 5mm |
| Upset section dimension: | Upset inner diameter 60mm, upset outer diameter 72mm |
| Recommended drilling depth: | Maximum recommended drilling depth 2050m |
| Main material: | ZT950 high-yield seamless steel pipe for drilling, high mechanical properties adapt to harsh working conditions with high load and alternating load of medium-deep strata |
| Standard single rod length: | 1.5m / 2m / 3m, customized special lengths available on request |
Specifications
| Model | NQUA |
| Drill Rod Specification (mm) | 71*5mm |
| Thickened O.D/I.D (mm) | 60/ 72mm |
| PCS/ Bundle | 19pcs |
| Weight kg/ m | 8.3kg/m |
| Core diameter / Hole diameter | 47.6/ 75.3mm |
| Recommendation depth | 2050m |
Product features
1. Integrated Monolithic Upset Structure
The rod body and connecting end are integrally hot forged and upset without welding splicing. The upset end is locally thickened and reinforced with smooth and uniform wall thickness transition, eliminating stress concentration, weld cracking and fatigue damage defects of traditional welded drill rods. Smooth inner bore ensures unobstructed drilling fluid flow and lower disassembly 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. Its torsion resistance, compression resistance, impact resistance and fatigue resistance are far better than conventional DZ series geological drill rods. It resists bending, distortion and fracture under 2050m medium-deep drilling, adapting to long-term continuous operation in complex strata with high formation pressure, dense hard rock and broken rock.
3. Precise Tolerance & Stable Deep Hole Operation
CNC precise machining tolerance of upset section perfectly matches supporting locking threads, with tight joint fit 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, guarantees stable torque transmission at rated 2050m depth, and effectively avoid thread galling, abnormal 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 special medium-deep surface drilling rigs, reduce drill rod joint quantity, shorten assembly time, improve overall drilling efficiency and cut joint consumption and equipment maintenance cost.
