Top Hammer Drill Rod Manufacturer
Optimized steel delivers high impact resistance. Precision threads ensure stable coupling and long service life.
Achieve deeper, faster, and more cost-efficient drilling.
Types of Top Hammer Drill Rod
We offer two primary designs of top hammer drill rods to accommodate different drilling systems and operational efficiency requirements.
Drifter Rod (MM Rod)
Features male threads on both ends (Male-Male) and requires a separate coupling sleeve for connection.
- Advantages: Economical and flexible. Damaged threads or couplings can be replaced individually, resulting in a lower initial investment.
- Best For: Cost-sensitive applications, manual rod handling, or operations where connection speed is not the primary concern.
Speed Rod (MF Rod)
Features a male thread on one end and an integrally machined female thread (box) on the other.
- Advantages: Increases efficiency by 10–15%, ensures rigid connections for straighter holes, and suits automated rod handling systems.
- Best For: Large-scale mines and tunneling projects aiming to lower total cost per meter; standard for modern hydraulic drill rigs.
Key Technical Specifications of Top Hammer Drill Rod
Clear data helps you make informed decisions. The table below outlines our standard product parameters, all of which are customizable.
| Parameter | Specification |
| Rod Type | Drifter Rod (MM Rod)、Speed Rod（MF Rod） |
| Rod Section | Hexagonal: Hex22, Hex25, Hex32, Hex35 Round: Rd39, Rd46, Rd52, Rd60 |
| Thread Systems | R-Series (Low Power): R25, R28, R32 T-Series (High Power): T38, T45, T51 Performance Series: GT60 |
| Standard Lengths | 915mm (3ft) – 6100mm (20ft), with custom lengths available upon request. |
| Core Steel Grade | Premium Line: 23CrNi3Mo Alloy Steel (Guarantee of toughness & life) Standard Line: 42CrMo Grade Steel |
| Heat Treatment | Premium Line: Full-body Carburization (Hard case, tough core) Standard Line: High-Frequency Induction Hardening |
| Compatibility | Fully interchangeable with Sandvik, Epiroc/Atlas Copco, and other major drilling systems. |
Key Advantages That Set Us Apart
Premium steel, full-body carburizing, high-torque threads, and job-specific shapes – all engineered to extend rod life and keep your drills running stronger, longer.
Superior Steel Grade
Made from high-nickel 23CrNi3Mo alloy steel for outstanding toughness. It resists tensile stress waves reflected from hard rock, preventing brittle failure and delivering longer fatigue life.
Advanced Full-Body Carburization
A long-term case-hardening process creates a hard, wear-resistant surface while keeping a tough core. It also adds residual compressive stress to the surface, greatly delaying fatigue crack initiation.
Optimized Thread Systems
Full range of precision threads (R-series, T-series, and high-performance GT60). Trapezoidal T-series threads offer larger contact area to handle the high torque of modern drills, ensuring tight joints and less risk of thread damage.
Application-Specific Geometries
For horizontal drilling in tunnels, we provide Hexagonal Rods with superior flushing capabilities. For vertical bench drilling in quarries, we offer cost-effective Round Rods. This ensures you have the optimal tool for every scenario.
Application Scenarios
Our top hammer drill rods are utilized across a wide range of rock excavation projects. We provide expert guidance for optimal selection.
Tunneling & Drifting
Recommended：R32/T38 Hex Rods.Hex shape agitates and clears cuttings, prevents sticking.
Mines & Quarries
Recommended：T45/T51/GT60 Round MF Rods
Gravity helps flushing; round is cheaper, MF rods are stiff, fast, and keep holes straight.
Slope Stabilization & Foundation Work
Recommended：R32/T38 Extension Rods
Shallower holes + budget-sensitive → extension rods give best value.
Dimension Stone Quarrying
Recommended：R25/R28 Hex Rods.Light and precise holes needed for granite blocks.
Why Choose EnSheng?
Our factory-direct manufacturing, strict quality control, and engineering-level customization ensure you receive high-performance drill pipes built for demanding water well applications.
Technical Transparency You Can Trust
We don’t just claim “high quality.” You can see our large-scale carburizing furnaces and the 23CrNi3Mo steel we use — real proof of top-tier heat treatment and premium material.
Factory-Direct = Lower Price + Faster Support
No middlemen. You get the best price and talk straight to our engineers for quick, expert advice.
100% Compatible, Drop-in Replacement
Made to exact global standards. Fully interchangeable with Sandvik and Epiroc (Atlas Copco) parts — same OEM performance, much better price.
Our 8-Step Forged Connecting Rod Process
Every connecting rod we build is the result of race-proven engineering and zero shortcuts. From vacuum-degassed billets to deep-pit carburizing and relentless shot peening, we obsess over every detail so your engine can live at redline longer, harder, and safer.
Premium Material Selection & Inspection
Vacuum-degassed steel billets from top mills, every hollow bar strictly checked for concentricity and purity.
End Upsetting & Precision Threading
Induction upsetting + CNC cutting or rolling for maximum strength.
Full-Length Carburizing Heat Treatment
Deep-pit, multi-hour heat treatment for unmatched hardness and toughness.
Intensive Shot Peening & Final Finishing
Intense peening (+15-20% fatigue life), straightened, corrosion-coated, thread protectors.
After-Sales Support
Professional Maintenance Guidance
Clear instructions on thread lubrication, recommended torque, and best operating practices to extend rod life.
Failure Analysis Service
Our engineers can help determine whether a failure is due to product issues, operation, or application mismatch, and provide corrective recommendations.
Rapid Response
Our technical support team is on standby to answer any questions you encounter during operation.
Frequently Asked Questions
Have questions? We have clear answers. Here we’ve gathered you need to know about our fly cutter reamer—so you can make your purchase with complete confidence.
You can consult the Quick Selection Guide in our “Application Scenarios” section or contact our sales engineers directly. Please provide your drill rig model, hole size range, and the primary type of rock you will be drilling. We will provide a precise recommendation.
The fundamental difference is fatigue life. Standard hardening only hardens the surface and lacks a tough core and deep compressive stress protection, making it prone to brittle failure under hard rock impact. Our full-body carburized rods are “hard on the outside, tough on the inside,” engineered to endure millions of impact cycles. In hard rock, this can extend service life by 30% or more, significantly reducing your downtime and total costs.
Absolutely. Our products are manufactured in strict accordance with international standards for threads, dimensions, and performance, ensuring seamless compatibility and interchangeability with tools from these major brands.
The most common cause of thread failure is an improperly tightened connection. A loose joint causes the shockwave to generate immense heat and stress concentration in the threads, leading to burnout or fatigue failure. Always use the recommended torque to tighten your connections and apply a generous amount of specialized thread grease.
Call Us or Fill Out the Form Below
Our service team will reply to you within 1 business day.
+86 13673277680
+86 13673277680
info@enshengbit.com
Office Address：Economic Development Zone (West Area), Hejian City, Hebei Province, China
Boost Your Business with EnSheng!
Send us a message if you have any questions or need a quote. Our experts will respond within 24 hours and help you select the right bits for your needs.
“Looking for a simple, effective drilling solution?
Try EnSheng Bit.
Our tricone bits are built for solid performance, making your drilling tasks easier. Search ‘tricone bits’ to see the difference.