Drill Pipe
• Structural Features: Fewer sections (typically 3–4); features a spline-and-lock mechanism; characterized by thicker walls and larger diameters, resulting in greater self-weight, as well as superior strength and torsional resistance.
• Core Advantages: Strong thrust transmission capability, capable of meeting the high drilling pressure demands of hard strata; ensures lossless force transmission, resulting in excellent operational stability; highly adaptable to hard rock and complex geological conditions, yielding high-quality boreholes.
• Key Limitations: Complex operation—requires reverse rotation to unlock before drill withdrawal (demanding a high level of operational skill); limited drilling depth capability due to the low number of sections; relatively high energy consumption and equipment wear due to its substantial self-weight.
• Applicable Scenarios: Hard strata (moderately to slightly weathered bedrock, well-cemented pebble/gravel layers, frozen soil layers); high-bearing-capacity strata (ultimate bearing capacity > 500 kPa); rock-socketed piles and deep-hole hard rock drilling operations.
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• Structural Features:** Characterized by a high number of sections (typically 4–6), with straight drive keys and no locking positions; features relatively thinner walls and smaller diameters, resulting in a lighter self-weight.
• Core Advantages:** Simple to operate with rapid drill lifting speeds; offers flexible telescoping action and strong deep-drilling capabilities (accommodating more sections than comparable models); compatible with small-to-medium-sized drilling rigs, leading to lower construction costs.
• Primary Limitations:** Possesses limited pressure transmission capacity (prone to "slippage" in hard strata) and low energy transfer efficiency; in soft strata—or when encountering jamming or hard rock—the service life may be shortened due to accelerated wear on the drive keys.
• Applicable Scenarios:** Drilling in soft ground strata (clay, silt, sand) and ordinary soil layers; pile foundation construction for municipal and building projects requiring significant drilling depths (e.g., 30–50 meters); and operations involving small-to-medium-sized drilling rigs.
| NO | O.Dia. (D) mm | Sections (n) | Length(m) | Pressure form | Drilling depth (m) | Capable of supporting models |
|---|---|---|---|---|---|---|
| 1 | *299 | 3,4,5 | 9-14 | Machine lock Friction | 24-65 | XCMG、SANY、LOVOL、OSAINT、JOVE SUNWARD、YUTONG、ZOOMLION、 JINTAI、BAUER、SOILMEC、IMT、 CASAGRANDE、HITACHI、LIEBHERR |
| 2 | *340 | 3,4,5 | 9-14 | 24-65 | ||
| 3 | 355 | 3,4,5 | 9-14 | 24-65 | ||
| 4 | 377（*368） | 3,4,5 | 9-14 | 24-65 | ||
| 5 | 406（*394） | 3,4,5 | 9-15 | 24-70 | ||
| 6 | *426（419） | 3,4,5 | 9-15 | 24-70 | ||
| 7 | 440 | 3,4,5,6 | 9-15 | 24-85 | ||
| 8 | 470 | 3,4,5,6 | 9-16.5 | 24-91 | ||
| 9 | 508 | 3,4,5,6 | 9-18 | 24-103 | ||
| 10 | 530 | 3,4,5,6 | 9-20 | 24-114 | ||
| 11 | 580（575） | 3,4,5,6 | 9-24 | 24-138 | ||
| 12 | 630 | 3,4,5,6 | 9-26 | 24-150 |
Our Services
Powering Your Drilling Projects With Precision & Expertise
Custom Design
We work closely with contractors to design drilling tools that meet specific project requirements, ensuring optimal performance and cost efficiency.
Quality Assurance
All our YUXIANG and foundation drilling tools are produced with premium materials and strict quality control to withstand the toughest conditions.
Fast Delivery
Our efficient production process and well-managed inventory allow us to ship orders quickly, reducing downtime for your projects. We also offer flexible shipping solutions
Technical Support
Our experienced engineers provide expert advice on tool selection, usage, and maintenance to help you achieve the best drilling results.