Our ZENTOR® stainless steel couplers can be connected to both stainless rebar and black rebar thanks to their special design. Due to this special property and the associated wide range of possible combinations of the different rebar grades, we have currently decided against general approval.
We have subjected all diameters to static tests in our in-house laboratory. These tests are available if required. We can also carry out the tests you require, internally and externally for your specific project, or obtain approvals on a case-by-case basis. This means that you are not limited in your projects by the predefined rebar grades of an excisting approval.