Products Description
Thread drill rods are key components specially designed for tophammer drilling, widely applied in mining, quarrying, tunneling and infrastructure construction.
KATDRILLS Extension Drill Rod
Our extension drill rods efficiently transfer power from the rock drill piston to the rock formation; one end is engineered for connection with couplings or shank adapters, and the other end links seamlessly to threaded drill rods.
Parameters
| Steel grade | 23CrNi3Mo (Sanbar 64) |
| Thread size | R32, R38, T38, T45, T51. |
| Rod size | Round 32, Round 39, Round 46, Round 52. |
| Length | 600mm to 6100mm. |
| Slot for wrench | with or without |
|
Thread |
Cross section |
Schematic diagram |
Length(L )mm |
|
R32 |
RD 32 |
|
610-5490 |
|
R38 |
RD 39 |
915-4000 |
|
|
T38 |
RD 39 |
1000-4625 |
|
|
T45 |
RD 46 |
1000-6095 |
|
|
T51 |
RD 52 |
1000-6095 |
Extension Drill Rods primary uses:
Mining & Quarrying
Tunneling & Civil Engineering
Bench Drilling & Surface Blasting
Foundation & Pile Drilling
Geotechnical & Exploration Drilling
Features
Round drill extension rods stand out for premium quality and superior operational performance, with a suite of core features that make them the ideal choice for diverse drilling applications. These key attributes deliver unrivaled durability, drilling efficiency and cost-effectiveness for on-site operations across all project scales.
Advanced Carburizing Heat Treatment
A precision carburizing process is applied to boost the surface hardness of our drill rods significantly. This specialized heat treatment forms a rugged, wear-resistant outer surface while preserving a robust, ductile core-dramatically extending the rods' service life and enhancing their overall wear resistance for high-stress drilling work.
High-Grade Alloy Steel Material
Our round drill extension rods are crafted from 23CrNi3Mo, a high-performance alloy steel that matches the quality standard of Sandvik Sandbar 64. This premium material formulation ensures exceptional tensile strength, impact toughness and fatigue resistance, enabling the rods to endure the extreme stress of rock drilling and avoid premature structural failure.
Outstanding Cost-Performance Ratio
Engineered for optimal value, these drill rods strike the perfect balance between top-tier performance and competitive pricing. Their excellent cost-effectiveness delivers a high return on investment for all drilling operations, as they deliver consistent, reliable results and an extended service life without the premium price tag of comparable branded products.
Comprehensive Product Specifications
We offer a full range of round drill extension rod specifications, fully tailored to meet the demands of distinct drilling scenarios and operational requirements. This exceptional versatility means the perfect rod solution is available for every project-from small-scale civil construction to large-scale industrial mining-maximizing drilling performance across all application scenarios.
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High-quality steel |
Full carburizing |
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|
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Strict testing standards |
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Our Service
At KAT Drilling Tools, we deliver customer-centric solutions for mining, construction, exploration, and oil & gas sectors-covering the full drill tool lifecycle.
Customized Design & Manufacturing
Bespoke drill bits/rods tailored to your drilling conditions, compliant with API/ISO standards. Rapid prototyping and batch production available.
Quality Control & Testing
Rigorous raw material, in-process, and final performance inspections. Detailed quality reports for every batch.
Technical Consultation & Support
Expert advice on tool selection, on-site training, and real-time troubleshooting to minimize downtime.
After-Sales Maintenance & Repair
Cost-effective maintenance, professional repair, and fast spare parts supply to extend tool lifespan.
Logistics & Supply Chain
Flexible delivery (bulk/JIT/emergency), secure packaging, and full customs/documentation support for global trade.
Long-Term Partnership
Customized service packages, dedicated account management, and continuous optimization based on your feedback.
Why choose us?
At KAT Drilling Tools, we stand out as your trusted drill tool partner for core advantages that deliver real value:
1. One-Stop Drill Tool Supply
2. Uncompromising Quality
3. Competitive Cost-Effectiveness
4. Professional Technical Support
5. End-to-End Service
6. Global Reliability
7. Trusted Long-Term Partnership
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