Expansion sleeve ceiling dowel

摘要

In the ceiling dowel and expansion sleeve (3) is supported on the reduced dia. (5) and the cone (4) of the bolt (1). A lug (6) is arrested in the slot (8) of the bolt protruding over the sleeve plan face (7). The strength is so ? that as tensional stress is obtained between the bolt stem and borehole wall after driving the dowel into the borehole.