Variable diameter sleeves can be widely used in reinforced concrete structural 

engineering in various industrial and civil buildings. Especially suitable for steel 

bar connections in high-rise buildings, roads, bridges, subways, tunnels, power stations,

 dams, and other buildings and structures with high requirements for explosion 

prevention and earthquake resistance. Suitable for the same or different diameter

 connection of HRB335 and HRB400 grade steel bars with a diameter of 16 to 40mm in

 beams, slabs, columns, and foundations in any part and direction, and can also be 

used as pre embedded steel bar joints

• 黔南rebar coupler