The device produced by Kaifeng Zhongqiao Prestressed Equipment Co.Ltd include line-rod coupler .line-line coupler and rod-rod coupler .These devices connect with materials such as Φ25 precision rolled rebar as well as Φ12.7 and 15.2 strands,saving a large amount of pre-stressing tendons for construction companies.These devices are safe ,reliable,efficient and material-saving.Welcome to contact us!