The process of upsetting sleeve is to use an upsetting machine to upset the end of the steel bar first, then use a threading machine to make a thread on the upsetting section of the 

steel bar, and then use a connecting sleeve to connect the steel bar. Upsetting straight threaded steel bar joints are suitable for any part of all earthquake-resistant and non-seismic engineering structures.

Upsetting straight threaded steel bar joints are used in projects with higher construction requirements, such as road and bridge pile foundations. The steel bar needs to be squeezed and thickened and 

connected with the sleeve to make the entire connected steel bar more resistant to tension.

Specifications φ16mm, φ18mm, φ20mm, φ22mm, φ25mm, φ28mm, φ32mm, φ36mm, φ40mm are regular styles, and 50mm, 55mm, 60mm super-large styles are also produced according to customer needs.

• 黔西南Thick pier sleeve
• 黔西南rebar coupler