R28 Extension Rod-manufacture,factory,supplier from China

Extension drilling refers to the practice of extending the reach of the drill string to access deeper rock formations or to drill larger-diameter boreholes. Extension drilling is achieved by adding additional drill pipes or drift rods to the existing drill string, thereby increasing its length.This technique is commonly used in mining, geotechnical exploration, and construction projects where deeper drilling is required.

ProductDrill RodOther NamesDrill rod,Drill pipe,Extension drill rod,Hollow bar,Top hammer drill rod,Excavation drill rod,Rock drill rod,Round drilling rod,Hex drill rod,Tomroc dill pipe,Rock drilling tools,Rock drill tools,Rock drilling tools,Threaded drill rod,Mining drill rod,Thread rock drill rodMaterial23CrNi3MoApplicationBench Drilling, Production drilling, Long hole drilling, Drifting,Tunnelling, Mining, Quarrying, Ore Mining,Blasting and Infrastructure Construction,Facedrilling and BoltingThreadR22, R25, R28, R32, R35, R38, T38, T45, T51, GT60, ST58, ST68, SR28, SR35...Rod TypeExtension

Discover the power of our Coupling Sleeves for rock drilling! Our range of drill rod couplings are designed to meet all your drilling needs. Watch to learn more about our semi bridge, full bridge, and crossover couplings.

We manufacture & supply drill rods of various lengths and threads. Application：Bench Drilling, Production drilling, Long hole drilling, Drifting,Tunnelling, Mining, Quarrying, Ore Mining,Blasting and Infrastructure Construction,Facedrilling and Bolting.The Coupling Sleeve is a sleeve-shaped rock drilling component with internal threads designed for connecting either a shank adapter to a drill rod or for connecting one drill rod to another. Our company manufactures and supplies three types of drill rod couplings: semi-bridge couplings, full-bridge couplings, and crossover couplings.

Our top hammer rock drill rods, also known as hydraulic drill rods, are designed for heavy-duty performance in rock drilling operations. The threaded drill rods we offer are expertly crafted and rigorously tested to ensure optimal performance and durability. Connect them with shank adapters and drill bits to efficiently transmit impact energy and torque to the drill bit for effective rock drilling.

Take you into a day in Tianyue,our factory is specialized in manufacturing rock drilling tools,top-hammer tools, mining tools,construction tools,foundation tools,tunneling tools and  road milling tools.   Our main products are Drill Bit, Drill Rod, Coupling Sleeve, Shank Adapter coal mining bit, bullet teeth,road milling bit,rotary drill.

Types and Features: BITS:Tapered system is a further development of the integral system. It features various sizes of bits in diameter and different face types of bits can be used on the same rod. There are two cross sections which are 22mm and 25mm in diameter, with lengths up to 8000mm. The hole sizes range from 21mm to 41mm in diameter. Threaded bits mainly range from 41mm to 152mm. Top hammer bits can also be classified as button type and blade type.

The specification and hardness of the top hammer shank adaptor play a crucial role in determining the speed of rock drilling and the lifespan of the rock drill. It is essential for the hardness of the shank adaptor to be appropriate. If the shank is too soft, the service life of the rock drill will be short.

Correct selection of picks is critical to excavation efficiency. Here are some key considerations:1. Mineral type and hardness: Different picks are suitable for underground minerals of different types and hardness. Make sure you choose a pick that matches the rock hardness.2. Cutting efficiency: The design and shape of the pick will affect the cutting efficiency. Some picks are suitable for high-speed cutting, while others are suitable for harder rock. 3. Wear Resistance: Consider the wear resistance of the pick, as wear will reduce efficiency.

Under the leadership of the relevant person in charge of our company, the customer visited our factory and experienced the production of drill bits, drill rods, connecting sleeves, drill bits and picks at close range, and gave full recognition.Subsequently, the two parties had in-depth exchanges on the production time, payment methods and after-sales service of the drill tools.The leaders of our company said that the leaders of Tianyue Drilling Tools, as representatives of entrepreneurial spirit, actively practice social responsibilities while doing a good job in business, and are an example f