Soil stabilization with nailing method is very common in urban areas in which is not feasible to use traditional inefficient methods. However, this method is applicable only in cases where the soil quality is appropriate in terms of adhesion and resistance parameters. If the soil is loose or poor in terms of quality, it is not sufficient to carry out nailing and anchorage operations in the classical ways, which is very costly and sometimes impossible. In this case, the best alternative is to use self-drilling Hollow Bars in which drilling and grouting operations take place in one single step. This method benefits from a rotary injection adapter which leads to a faster operation with lower cost and best possible results. click on each part's icon to open specifications table