Permanent TPE-15 ground anchors are usually used in the construction of bulkheads and diaphragms, where the type of ground has serious highly corrosive geo-technical problems in the presence of groundwater, where an increased adherence of the bulb is required. The TPE-15 anchor is totally encapsulated, all its parts are encapsulated in polyethylene, thus ensuring a total protection (hermetic of all its components).