Middle Support Drill Rod JD720501B is a critical drill string component for Hydraulic Rock Drills. It is engineered for heavy-duty mining drill string stabilization and torsion resistance. For instance, it supports long drill strings in underground deep-hole drilling. Additionally, it stabilizes drill rods in open-pit hard rock blasting hole operations.
Mining environments pose severe challenges for drill middle support rods. First, high torsion loads risk rod deformation and drill string misalignment. Second, 50G continuous vibration damages thread connections and causes loosening. Third, rock abrasion and slurry corrosion wear down rod surfaces and reduce strength. Fourth, impact loads from hard rock drilling cause fatigue cracking. Fifth, extreme temperature swings weaken material toughness and coating adhesion.
These issues often lead to drill rod failure. For example, a deformed support rod causes drill string bending and hole deviation. As a result, costly downtime and drilling efficiency loss occur. Yet, Middle Support Drill Rod JD720501B solves these pain points with robust design.
First, its 42CrMo alloy steel base delivers exceptional torsion resistance. Moreover, it withstands 8000N·m maximum torque without permanent deformation. This outperforms standard carbon steel drill rods by 180% in torsion capacity. Consequently, drill string stability improves significantly.
Second, the tungsten carbide wear coating achieves HRC 62-66 surface hardness. Notably, it provides 3000-hour wear resistance against rock abrasion. This prevents surface pitting and maintains coaxial precision over long-term use. As a result, service life extends by 250% vs. standard drill rods.
Third, the anti-corrosion epoxy powder coating + primer offers 1200-hour salt spray resistance. This outperforms uncoated alloy steel rods by 80% in harsh environments. Furthermore, it repels mining slurry and rust formation. This avoids structural corrosion and coating delamination.
Fourth, the precision thread processing and reinforced rod body absorb 50G vibration and impact loads. Importantly, it maintains thread tightness and coaxial precision under extreme drilling conditions. This eliminates thread loosening and drill string misalignment risks. This enhances overall drilling reliability.
Fifth, the 42CrMo alloy steel drill rod tolerates -40°C~150°C temperatures. On top of that, it retains toughness and coating integrity in all conditions. This eliminates brittleness or coating peeling risks in freezing or high-temperature mines.
Unlike generic industrial drill rods, this model is purpose-built for drills. Specifically, the high-torsion design targets long drill string support demands. Additionally, the carbide wear coating addresses rock abrasion risks. These features align with real mining demands. As a result, it outperforms standard rods by 220% in service life. This cuts replacement costs and unplanned downtime.
Our manufacturing process uses CNC precision forging and carbide coating. Furthermore, it involves torsion testing and coaxial precision verification. Each unit undergoes 8000N·m torque trials and ±0.02mm precision checks. Notably, no performance degradation is allowed before shipment.
The drill rod operates reliably in all extreme mining conditions. Moreover, the 42CrMo steel body endures 10,000-cycle impact tests. No cracking or deformation occurs during this period. Additionally, the epoxy coating remains intact for 36+ months.
The thread connection design integrates seamlessly with drill string assemblies. It requires only standard drilling tools for fitting. Consequently, maintenance teams complete replacement in 20 minutes. This minimizes operational downtime.
Our quality team conducts strict ISO 9001 verification for every unit. For example, tests include torsion resistance checks, wear trials and corrosion tests. Coaxial precision is also verified. Importantly, it complies with ISO 6407 drill rod standards and mining safety regulations.
It ensures stable support and torsion resistance of drill string assemblies. Additionally, it extends the service life of mating drill rods and drill bits by 90%. Overall, it delivers cost-effective, industrial-grade reliability. It minimizes downtime from drill rod failure. As a result, this maximizes operational efficiency and project profitability.
