The steel grouting connection is divided into Half Grout Rebar Coupler connection and Full Grout Rebar Coupler connection according to the structural form.

Half Grout Rebar Coupler is usually connected by a rebar with straight thread and a rebar connected by the grouting material and a grouting coupler. Generally it is used for prefabricated wall and frame column connections. At present, half grout coupler can connect HRB335, HRB400 and HRB500 ribbed steel bars, and its processing range is φ12-φ40mm.

Full Grout Rebar Coupler is a connection between the two ends of the steel bar through the grouting material and the grouting coupler. Generally used for the horizontal connection of the beam, it can also be used for the vertical connection of the main reinforcement. At present, half-grout coupler can connect HRB335, HRB400 and HRB500 ribbed steel bars, and its processing range is φ16-φ40mm.

The advantages for Rebar Grout Coupler include:

1) stable mechanical properties;

2) significantly reduced outer diameter, suitable for prefabricated components with small thickness;

3) connection form with straight thread at one end, shortening length by 30%, reducing construction reserved space and reducing costs.