We have three-blades forged Step type (blade in steps) or Chevron type (straight blade), suitable for drilling in soft or medium-soft soils such as clays, sand, gravel or marl.
Three-blades are the most used, but on request it is also possible to have four-blades models.
Each blade, both on top and that on the shoulders, is provided with tungsten carbide plates.
Available threads are: N Road 2" 3/8, 3" 1/2 and 4" 1 / 2 Api Regular Pin according to the diameter of the chisel (Drag Bit).
On request we can provide three blades "disposable" or non-standard threads.
The use is also suitable for jet grouting.