Find high quality roof bolt bits with competitive price here. Please rest assured to buy roof bolt bits with Xian Research Institute Of China Coal Research Institute

Mainly used to drill bolting support boreholes in coal mines, ensuring fast and highly efficient roadway excavations.

Roof bolt bits featuring high quality PDC as cutter, have high wear and impact resistance. The simultaneous erosion of the matrix and the PDC piece makes the bit self sharpening, improving the drilling efficiency. The advanced welding technology guarantees the high strength and long service life. The bits can be used in most formations, suitable for air drilling and water drilling operations, providing a high ratio of successful holes with correct and stable hole diameters, greatly reducing the waste of bolts.

? Selection (unit: mm)

F25, F27, F28, F30, F32, F36, F42