Post-tensioning wedges generally consist of four parts: anchor ring, clamp, pad and screw. They are suitable for anchor bolts used for prestressed concrete in engineering construction. They are usually used in bridge construction, pre-installed and positioned, and then poured with concrete. They are buried in the concrete at both ends, that is, the ends of the corrugated pipe, and the end faces are set to remain stable when the jack is tensioned.
