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high strength Tricone bits surface mine drill bit for coal mining

Blast hole Drilling is a technique used in mining whereby a hole is drilled into the surface of the rock, packed with explosive material, and detonated. The aim of this technique is to induce cracks in the inner geology of the surrounding rock, in order to facilitate further drilling and associated mining activity.








To increase efficiency and lower drilling costs, blasthole rigs are expected to deliver more and more energy to the drill bit. As a result, drill bits must be carefully designed and manufactured to not compromise the productivity and efficiency of increasingly complex and expensive drilling systems. Bits have become an even more critical and vital component in this process.


We supply a range of highly energy-efficient and productive point-attack cutting tools, suitable for both civil and mining applications. Combining tool design, high-grade alloy steel and premium grades ensure that we meet your performance demands.




Wuhan Yijue Tengda Machinery Co., Ltd. is a professional manufacturer engaged in the design and production of foundation rotary drilling tools and mining tricone bits. Our main products include: drilling buckets & augers, core barrel,drill bits,casings,tremie pipes,single roller cone bits and mining blasthole tricone bits.

We started to engage in the production and sales of mining blasthole tricone bits because we have accumulated rich experience in the production of single roller cone bits.

We are delicated to serve for the foundation drilling/piling  and blasthole mining industry.








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