Self-Injection Rods

Produced from seamless tubes, they also undergo a cold rolling process to form the continuous thread with an exclusive profile. Incotep Hollow  have as their main characteristic their high mechanical strength, which, combined with their hollow section, allows the rod to act simultaneously as a drilling and injection rod. For drilling, a special tricone drill is coupled, which will be incorporated into the rod, equipped with directional holes that inject the cement grout under pressure, allowing the formation of the anchoring bulb with a variable diameter between 200 and 300mm, depending on the rock mass profile where the tie will be anchored. The installation of the Hollow  is also possible in mixed soil/rock or rock mass only, simply by attaching a drill bit with carbide buttons, also supplied by Incotep. In this way, at the end of the drilling process, the bolt will be automatically installed and injected, a methodology that gives the Hollow  System a substantial gain in time in relation to the conventional anchoring process.