Qyc front-end fixed jacks have internal re-usable anchor which can automatically clamp and loosen the wedge, they are mainly used for bfm15 and bfm13- type various single tensioning with bonded and unbounded.
Notice: qyc type front-end fixed jacks could be matched with different size, length of the top cover, retreat anchor device, to used in the experiment by root tension pre-tightening, tension retreat anchor and stay cable tone with single cable.
Woode case.
