Chemical anchor bolt is also called adhesive type anchor bolt, which is composed of metal screw anchor glue. The double group differentiation pipe RM is composed of rapidly solidified vinyl resin curing agent, with small side distance requirement high bearing capacity. The anchor bolt formed by anchoring glue is the most widely used keel fixing product at present.

As the name implies, the embedded mechanical anchor bolt is set in the structure in advance solidified together with the cast-in-place concrete, thus forming an integral anchor bolt. Because of the advantages of seamless connection of embedded mechanical anchor bolt, it is considered to be one of the most reliable safest anchors.

The anchoring force of the reaming type anchor bolt comes the mechanical locking force formed by the lock key between the enlarged hole at the bottom of the anchor hole the expansion part of the anchor bolt. It is an anchor bolt with anchoring effect formed by the lock key between the enlarged hole at the bottom of the anchor hole the expansion part of the anchor bolt, which is divided into pre reaming anchor bolt self expanding hole anchor bolt. Its bearing capacity tensile bearing capacity are stronger than the other three. Expansion anchor bolt is a kind of anchor bolt which uses expansion parts to extrude the hole wall of anchor hole to form anchoring effect. It can be divided into torque controlled expansion anchor bolt displacement controlled expansion anchor bolt.

The anchoring force of the expansion anchor bolt comes the friction between the expansion part the anchor hole wall, which is relatively poor in the bearing capacity tensile bearing capacity. Compared with the above four kinds of anchor bolts, chemical anchor bolt is more economical widely used; embedded anchor bolt reaming anchor bolt are the most safe, reliable excellent; while expansion anchor bolt is recommended for curtain wall structure.