PDC Bits

275mm 3-Wing Concave PDC Bit

275mm 3-Wing Concave PDC Bit | Heavy-Duty Large Bore Drill Bit for Water Well, Mining & Geothermal Drilling

As a professional OEM/ODM PDC bit manufacturer specializing in large-caliber drilling tools, we launch the premium 275mm 3-wing concave PDC bit , a non-standard heavy-duty drilling solution tailored for super-large borehole construction projects. Different from conventional 10-inch standard drill bits, this 275mm oversized PDC bit is designed for customized large-diameter drilling demands, perfectly solving the matching difficulties of special-spec drilling holes in water conservancy, mining and geothermal engineering.
Adopting an upgraded optimized three-wing concave centered structure , the bit features a larger rock-breaking coverage area and more reasonable stress distribution. It delivers ultra-stable drilling performance in thick soil layers, gravel layers, broken weathered rock and medium-hard composite strata. The unique concave center design effectively suppresses bit shaking and hole deviation during high-load large-diameter drilling, ensuring straight boreholes and high hole-forming quality, which is incomparable to ordinary standard-size drill bits.
This 275mm large-size PDC bit is built with a thickened high-strength alloy matrix and inlaid with high-wear-resistant polycrystalline diamond compact cutters. The overall rigidity and impact resistance are fully upgraded, adapting to long-term continuous heavy-load drilling operations for super-large boreholes. The optimized wide flushing channel structure accelerates cuttings and mud discharge, completely avoiding bit balling, mud blockage and drilling stagnation in high-viscosity complex strata, greatly improving overall construction efficiency.
Core Product Advantages:
  • Exclusive 275mm Oversized Specification : Custom non-standard large bore design, specially developed for special-diameter drilling projects that standard drill bits cannot match.
  • Optimized 3-Wing Concave Structure : Uniform rock-breaking force, stable drilling posture, effectively reduces hole deviation and bit vibration in heavy-load drilling.
  • Thickened High-Strength Matrix : Enhanced overall rigidity and fracture resistance, durable for long-term high-intensity large-diameter drilling work
  • Flexible Thread Customization : Compatible with internal and external threads of multiple international standards, freely matching various large drilling rig equipment.
  • High-Efficiency Drilling & Discharge : Widened flushing grooves ensure smooth mud and cuttings discharge, adapting to diverse complex geological conditions.