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Integrated Production System & Superior Quality Standards
XTC Rock Drilling Tapered Tools & H22 Drill Rods
Our raw material originates from 320*480 large-section continuous casting billets, which are rolled into 150*150 square billets. Through precision-drilled holes and seamless pipe inserts, they are fabricated using robust 55SiMnMo alloy. The manufacturing workflow is comprehensive, covering steel rolling, forging, quenching, and tempering.
To accommodate different drilling scenarios, we offer diverse quality grades:
Optimized for solid, highly abrasive rock formations (Level III or above, hardness coefficient f≥12).
Suitable for rock formations of Level IV or above, hardness coefficient f≥12.
Configured for softer rock structures of Level IV or below, hardness coefficient f≤8.
Detailed Parameter Dimensions of H22 Tapered Drill Rod
| Drill Rod Specs | Length (mm) | Foot | Piece / Pack | Weight approx (kg) |
|---|---|---|---|---|
|
H22 Tapered Drill Rod Shank Length: 108mm Degree: 7° Pinhole Dia. of Shank: 7.5±0.3mm Core Hole Dia: ≥5.5mm |
1000 | 3'3'' | 100 | 315 |
| 1200 | 3'9'' | 100 | 370 | |
| 1400 | 4'6'' | 100 | 435 | |
| 1500 | 4'9'' | 100 | 465 | |
| 1600 | 5'2'' | 100 | 495 | |
| 1800 | 5'9'' | 100 | 555 | |
|
Alternative Raw Materials Available: - ZK95CrMo - ZK23CrNi3Mo - ZK40SiMnCrNiMo - ZK35SiMnMoV |
2000 | 6'6'' | 100 | 620 |
| 2200 | 7'2'' | 100 | 680 | |
| 2400 | 7'9'' | 100 | 740 | |
| 2500 | 8'2'' | 100 | 770 | |
| 2600 | 8'5'' | 100 | 800 | |
| 2800 | 9'2'' | 100 | 860 | |
| 3000 | 9'8'' | 100 | 920 | |
| 3300 | 10'8'' | 100 | 1010 | |
| 3500 | 11'5'' | 100 | 1070 | |
| 4000 | 13'1'' | 100 | 1220 | |
| 4500 | 14'8'' | 100 | 1370 | |
| 5000 | 16'4'' | 100 | 1520 | |
| 5500 | 18'1'' | 50 | 835 | |
| 6000 | 19'7'' | 50 | 915 |
Features, Durability & Wide Application Scope
1. Superior Raw Materials: Rolled into 150*150 square billets from 320*480 large-section continuous casting billets. Features precise central holes, seamless structural lining, and 55SiMnMo composite components.
2. Long Service Life: Advanced hardening and heat treatment ensure optimal performance and operational longevity.
3. Direct Factory Supply: Uncompromised quality backed by competitive, direct-from-factory pricing structures.
Broad Application Field: Our rock drilling tools are widely deployed in mining, tunneling, highway and railway construction, as well as complex engineering projects like high-scale national hydropower and nuclear power plants.
Workshop and Warehousing Infrastructure
Operating as an integrated enterprise of production and trade, we specialize in manufacturing drill steels and tools. Our technical division features over 30 engineering and tech specialists forming a robust science and R&D team responsible for consistent technological innovation.
Steel raw materials are systematically procured from large state-owned enterprises for guaranteed quality control. With a massive warehousing capacity of 800 to 1,000 tons, continuous production is always assured. Inventory management utilizes an advanced ERP system, classification zoning, and high handling capacity.
Rigorous Inspection Standards & Logistics
Our quality control division consists of 30 specialized members employing over 30 advanced inspection systems. The unit is responsible for analyzing raw materials, checking in-process semi-finished goods, and inspecting finished products. They conduct over 800 analytical test profiles covering physical features, structural chemistry, mineral properties, mechanical tolerance, and dimensions. Covered products include drilling steels, cemented carbide items, and construction tools.
All raw materials are carefully classified and logged into our inventory database to ensure absolute traceability. Every production batch undergoes strict quality gates prior to dispatch.
Verified Industry Standard Compliance
We are a high-tech manufacturing enterprise integrating research and development, production, and professional sales.
We are fully certified under ISO9001 and ISO14001, adhering to rigorous quality management and environmental safety standards.
Yes, we accept both OEM and ODM orders. We can manufacture customized drill rods and abnormal specs to suit your blueprints.
Yes, we provide quality testing samples upon request so customers can verify durability and performance before ordering.
Our standard material is 55SiMnMo. According to technical needs, we can also offer alternative raw materials including ZK95CrMo, ZK23CrNi3Mo, ZK40SiMnCrNiMo, and ZK35SiMnMoV.
Extra-excellent grades (QSAAA/GTIII) are suitable for hard rock (f≥12). Excellent grades (QSAA/G30) work well on medium-hard rock (f≥12), and ordinary grades are designed for rock levels below IV (f≤8).
