High Precision 12° Tapered Button Bit With 70mm Long Skirt For Quarrying And Underground Mining

Engineered for high efficiency handheld short-hole drilling operations, our long skirt tapered button bits are premium grade drilling tools tailored for dimensional stone quarrying, underground mining, tunneling and well drilling projects.

Crafted with top tier raw materials and processed via professional precision heat treatment technology, these tapered drill bits deliver exceptional durability, stable drilling performance and fast penetration speed in harsh geological conditions.

Unlike standard short body drill bits (50-55mm in height), our long skirt drill bits feature an extended skirt height of over 60mm (70mm for this model), ensuring tighter fitting, more stable connection with tapered drill rods and longer service life in continuous drilling work.

We offer customized tapered button bits with diverse taper angles and diameter sizes to match different drilling equipment and construction demands, covering full range short hole drilling scenarios.

Professional drillers prefer our long skirt tapered button bits for their superior drilling efficiency and reliable anti-loosening performance. The optimized taper angle structure features an excellent knock off index, where smaller taper angles effectively prevent bit spinning during high speed drilling, ensuring precise hole positioning.

Every drill bit undergoes strict precision processing and quality inspection to guarantee stable and consistent working performance.

• Perfect Rod Matching : The extended long skirt structure fits tapered drill rods seamlessly, eliminating shaking during drilling, improving hole straightness and reducing equipment wear.
• Mature Welding Craft : Adopts stable and industrial professional welding technology, which firmly fixes tungsten carbide inserts to the bit body, avoiding carbide falling off and extending overall service life.
• High Dimensional Accuracy : Standardized taper degree and precise size calibration ensure 100% compatibility with matched drill rods, realizing smooth drilling operation.
• Durable Cost Effective : Integrates high strength alloy steel body and wear resistant carbide inserts, with strong impact resistance and anti abrasion performance, lowering long term drilling operation costs.
• Premium Raw Material Configuration : Equipped with ZCC YK05 grade tungsten carbide inserts with outstanding rock breaking and wear resistance, suitable for hard rock drilling conditions.
• Precision Manufacturing : The bit body is processed by advanced CNC precision machinery and strict standardized heat treatment, with high hardness, toughness and structural stability.

Our long skirt tapered carbide button bits are specially designed for small range short hole drilling, widely applicable to multiple mining and construction industries, and are ideal consumables for handheld drilling systems.

• Dimensional stone quarrying industry for stone mining and shaping drilling
• Underground mining operations for mine tunneling and ore drilling
• Tunnel excavation and underground engineering construction
• Water well drilling and mineral exploration drilling projects

Focusing on the R&D and production of mining drilling tools for years, we strictly control every production process from raw material selection, CNC precision processing, heat treatment to welding assembly.

Our long skirt tapered drill bits solve the common problems of ordinary drill bits such as easy spinning, fast wear, poor matching and low drilling efficiency. With fast penetration rate, stable operation and ultra high cost performance, they have become the preferred drilling tools for global quarrying and underground mining contractors.