There is no high requirement for the depth and cleanliness of the concrete hole, and it is easy to install. According to the thickness of the roof, the appropriate embedding depth is selected, and the tension increases with the increase of the embedding depth, the product has a strong load-bearing capacity.This product has long threads and is usually used in heavy load facilities. To obtain reliable and large fastening force, the clamping ring on the product must be fully expanded, and the Suitable for concrete and dense natural stone, steel structural members, metal profiles, bottom plates, support plates, brackets, balustrades, doors and Windows fixed, machine fixed, girder, bracket, cantilever, elevator, seat, table fixed, wooden structure and so on.It is widely used in railway Bridges, industrial buildings, ships, machinery and other industries.