Mining parts

Blasthole drill steel

Designed for heavy wall construction and optional hard facing to help boost longevity and control operating costs

Komatsu blasthole drill steel — both fabricated and integral — is tailored to your specific drill regardless of manufacture, OD diameters of 7" to 13 3/4". Our fabricated drill steel features tool joints made from alloy steel and is inspected with ultrasonic technology for quality assurance. Wrench slots or flats are milled to suit the requirements of the drill's wrench size and location. All rotary-shouldered connections are kemplated to protect against galling during the break-in period. Heavy wall construction and optional hard facing help promote longer life and lower operating costs.

Other features and advantages:

• Integral drill steel is made from premium quality alloy steel bars
• Bores are trepanned to sizes for the correct balance in the selected rotary-shouldered connection
• Concentricity and axial alignment of the connections to the drill steel are held to close tolerance
• Application of tungsten hard facing is available to help protect fabricated or integral steel from abrasion and erosion
• Komatsu also manufactures bit subs matching the drill pipe and selected bits used by the customer. Also manufactures the saver sub/top sub connecting the drill pipe to the shock sub.