Self drilling system (SDA/IBO) with a service life of up to 50 years dependent on the ground conditions and a sacrificial corrosion that takes the time dependent corrosion behavior into consideration. To reduce the corrosion rate, a hot-dip galvanized system according to EN ISO is also available. The accessories are hot-dip galvanized or equivalently protected as well.

To ensure thread ability, the thread surface of the accessories may remain un-galvanized. Should small voids become visible on the anchor nut end facing towards the bar, these must be filled with zinc dust paint.