Engineered for drifting and tunneling applications, this R32 threaded button bit ensures superior hole straightness and high penetration rates in medium to hard formations.
Designed for continuous miners and shearers. Utilizes a reinforced carbide layer to offer outstanding resistance to abrasive wear during heavy-duty coal and rock mining.
Optimized for high-pressure drilling environments, delivering maximum energy transfer with minimum air consumption to maximize blasting efficiency.
Precision thread configurations and premium grade tungsten carbide insert technology designed to limit deviation during micro-tunneling and bench drilling.
Premium BR2 shank configuration optimized for quarry blasting and water well drilling projects, utilizing dense hemispherical buttons for granite wear-resistance.
Engineered to work efficiently under severe mining impacts, leveraging advanced internal structure geometry to improve flushing and prevent bit loss.
Designed for hand-held and hydraulic rig drifters. Exceptional power transmission through the SR35 thread, ensuring continuous, high-efficiency penetration in granite.
Features proprietary YK05 grade tungsten carbide to resist heat, deformation, and thermal cracking under high-frequency impact conditions.
We have more than 40 years of drilling tool manufacturing experience. All this expertise is built into all our rock drilling tools - for your benefit.
We look for outstanding performance in all our products and services. Ultimately, that means excellent hole quality and low-cost drilling for you.
We are one of the professional rock drilling tool manufacturers in China. Our state-of-the-art products will also give you a leading edge.
We offer you tophammer equipment and DTH equipment for every application, such as underground mining, tunneling, surface mining, well drilling, quarries, and construction.
Granite is widely regarded as one of the most challenging geologic materials to drill. Characterized by high compressive strength (typically ranging from 100 to over 250 MPa) and a high concentration of abrasive quartz (often 20% to 60%), granite demands exceptional performance from rock drilling tools. Standard drilling equipment faces catastrophic failures, micro-fracturing of carbide inserts, and rapid body wear when encountering these abrasive formations.
To drill granite cost-effectively, specialized manufacturing techniques are required. Specifically, Granite Drill Bits must balance toughness and hardness. The rate of penetration (ROP) is governed by the bit's ability to crush rock under impact loading rather than shear it. Therefore, button shapes, flush structures, and steel body hardening parameters must be tuned specifically to the compressive limits of the localized granite reserves.
The durability of a granite drill bit is dictated by two key structural elements: the carbide button inserts and the alloy steel matrix. At Shandong Kat Drilling Tools, our engineering research emphasizes:
Purchasing granite drill bits directly from Chinese manufacturing clusters offers unmatched financial and logistical benefits for global mining and construction operations:
First, vertical supply chain integration in provinces like Shandong ensures access to raw inputs (tungsten ore processing and localized alloy forging mills) without high transport tariffs. This vertical structure cuts intermediate costs by 15-30% compared to Western manufacturers.
Second, the scaling capacity of Chinese factories allows them to quickly match high-volume demands. Whether a mine requires customized T51 speed threads or standard DTH hammers for large geothermal drill fleets, advanced manufacturing configurations yield short lead times and lower unit costs.
The table below details standard technical specifications and the approximate price ranges for global procurement structures (Note: Prices depend on order volumes, steel alloy grades, and custom specifications):
| Thread / Shank Type | Diameter Range (mm) | Carbide Button Profile | Best Application Scenario | Est. Price Range (FOB China) |
|---|---|---|---|---|
| R32 Threaded Bit | 41mm - 51mm | Ballistic / Spherical | Tunneling & Drifter Drills | $30 - $65 / pc |
| SR35 Threaded Bit | 45mm - 57mm | Spherical Heavy Duty | Underground Bench Drilling | $45 - $80 / pc |
| T51 Threaded Bit | 76mm - 127mm | Conical / Parabolic | Surface Bench & Production Drilling | $110 - $240 / pc |
| DHD340 DTH Shank | 110mm - 130mm | Spherical Dense Layout | Water Well & Deep Quarry Blasting | $160 - $310 / pc |
| Mission50 DTH Shank | 130mm - 152mm | Spherical Reinforced | Geotechnical & Deep Foundation | $210 - $430 / pc |
Operating environments differ significantly across global regions. High-quality tools must adjust to varied moisture levels, temperatures, and geological formations:
When procuring industrial drilling equipment, quality certifications protect buyer investments. Shandong Kat Drilling Tools strictly conforms to the ISO 9001:2015 Quality Management standard, ensuring that every batch of drill bits undergoes rigorous ultrasonic non-destructive testing (NDT) to inspect structural integrity and locate internal voids.
Additionally, trace carbon tracking and compliance with environmental regulations are central to our current manufacturing upgrades. By optimizing alloy forging temperatures, we reduce energy consumption by 15%, providing our international partners with low-carbon footprint alternatives.
Designed with high-density polycrystalline diamond compact cutters. Engineered to cut quickly through abrasive mineral formations while ensuring core integrity.
A portable rock drill featuring multi-functional options like cleaving, tamping, and chiseling. Perfect for remote sites without access to air compressors.
High-performance, water-cooled, 4-cycle turbocharged engine. Serves as a reliable power supply for small to mid-sized mining rigs and machinery.
Engineered with high-efficiency screw elements and powered by reliable diesel engines to supply continuous, clean high-pressure air to DTH tools.
Features premium structural threads to ensure maximum torque transfer and high durability, reducing impact wear on drill string joints.
A critical high-performance component engineered exclusively for self-drilling anchor systems, designed to penetrate challenging formations.
Premium performance threaded bits designed to handle the heavy rotation speeds and repetitive impacts of mining and quarry operations.
Engineered to transmit impact energy from the rock drill piston directly to the drill string. Optimized for leading hydraulic rig models.
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SHANDONG KAT DRILLING TOOLS is one of the most professional manufacturers of Rock Drilling Tools in China. In terms of overall strength, we take the lead among enterprises in the industry. The company produces over 500 kinds of products including rock drilling bits, mining picks, DTH hammers, and top-hammer tools.
Our facility integrates advanced vacuum induction furnaces, automated heat treatment lines, and precision computerized CNC lathes, enabling us to export highly stable drilling tools to mining, quarrying, water well, and construction projects globally.
Contact Our Technical Engineers
Consult with our engineers to receive optimized drill bit recommendations tailored for your project's geology.
Designed for slope stabilization, tunneling foundation, and soil nailing. Serves as a drill rod, injection tube, and anchor bar all in one step.
Engineered for medium to high air pressures. Minimizes back-flow of drilling debris to extend hammer piston lifespan.
Features high-grade steel rods that undergo deep carburization to provide rigidity and strength, preventing bending and buckling under heavy impact loads.
Designed with simplified internal valving to deliver reliable impact performance even under low pressure environments.
A heavy-duty percussion tool optimized for quarry operations and structural foundation engineering.
Constructed with high-grade tungsten carbide to provide structural stability when drilling through granite and basalt.
Designed to connect and secure power transmission between heavy rock drill pistons and extension drill rods.
Features high frequency and high pressure, engineered to ensure high rates of penetration in abrasive quartz-rich rock layers.
A: Failure in hard granite is typically driven by two factors: thermal cracking and impact shearing. Because granite contains high amounts of abrasive quartz, friction generates significant heat. This thermal stress, combined with constant high-impact forces, can cause micro-fracturing in low-grade tungsten carbide. Using high-grade carbide, such as the YK05 grade, and optimizing air or water flushing helps reduce heat buildup and extend bit life.
A: The thread type must match the drilling system's power and hole depth. R32 threads are typically used for smaller diameter holes (41mm-51mm) in tunneling and underground drifting, where quick setup and high precision are needed. In contrast, T51 threads are designed for larger surface bench drilling (76mm-127mm) to handle high rotational torque and prevent thread binding under heavy loads.
A: DTH hammers deliver impact energy directly to the drill bit at the bottom of the hole, minimizing energy loss through the drill string as the hole gets deeper. This makes DTH drilling highly efficient for deep water wells and quarry blasting in hard rock. Top-hammer drilling is typically faster for shallow holes but loses efficiency in deeper applications due to energy dissipation along the drill rods.
A: Spherical buttons provide excellent resistance to chipping and wear, making them ideal for very hard, abrasive rock like granite. Ballistic and conical buttons offer faster penetration rates in softer to medium-hard rock, but wear down much quicker in abrasive granite. Choosing the right button shape is a balance between penetration speed and how long the bit lasts.
A: Key cost drivers include the grade of tungsten carbide used, the type of alloy steel body, the manufacturing precision (such as CNC machining tolerances), and the order volume. Buying directly from integrated manufacturers in China helps lower costs by removing distributor markups while maintaining high quality standards.
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