Client send us the specification requirement in details include the fluid in the pipeline, outdoor usage condition, the temperature requirement, pressure requirement ,adjustment dimension requirement ,pressure, flange dimension etc all details, then our engineer design the dismantling joint according to client.and produce according to accurate requirement from client, we call it customized dismantling joint according to client requirement details.If you also have the requirement details, feel free to send us to quote for you exactly according to your requirement.