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The conical body of the screw head is matched with the collar, and the gasket and the nut are placed to form a complete staggered bolt body. There is no protruding chess wedge on the anchor bolt collar, and the friction resistance is generated when it is installed with the hole wall.

With self-cutting mechanical locking effect, no special reaming drill is required. It is easy to install, reliable in performance, and can bear force when it is rotated vertically. When screwed to the installation torque, the safety of the anchor is guaranteed when the burial depth is insufficient. The tensile and anti-dun capacity can meet the requirements under long-term load, cyclic load and earthquake.

Use the tangent of the reaming wall at the bottom of the hole and the locking key of the mechanical anchor to form a lock body effect, complete Anchorage. It can withstand quite high loads and can be used to withstand shock and earthquake loads. Rear-expanding mechanical bolts have a real mechanical health-enhancing effect, but the reaming drills are specially designed. The non-expansion force generated by the mechanical locking key ensures the effective transmission of the force in the concrete.