ProDrill is one of the world leading producers of percussive drill steel and bits, like Integral Drill Steel, Tapered Rods, Plug Hole Rods, Threaded rods, Button Bits, Threaded Shank Adapter and
Description : DC drag bit is a comprehensive drilling bit, mainly used for water wells, mining, geothermal, environmental and exploration drilling. It is suitable for drilling in soft and soft-medium ...