Rock drilling tools Litong: Step drag bit is a drill bit which has been specifically designed for drilling into soft soil and rock conditions. They are best suited for drilling into sandy soil, clay, shale, limestone, gravel, marl etc and typically used for water well drilling, mining, geothermal, and mineral exploration drilling operations being conducted into soft rock. They are also well suited for drilling pilot holes.

3 wings step type drag bit with diameter 100mm

Litong drag bits featuring two designs: step and chevron

Step type drill bits are designed to drill soft to medium formations while chevron type bits are for harder formations.

A step drill bit is used for drilling overburdens with sand, clay and soft formations which will produce larger cuttings than a Chevron style bit. Step drill bit is more aggressive than the Chevron, thus ROP will be higher. However, it will be less durable as well. Rotary table speed should be between 60 and 80 rpm with light weight on bit (WOB).