YCQQ before the cassette-type jack is a cassette jack before, using the bilt-in front point tools anchor,can be used to kinds of strand, single strand tensioning anchorage,or porous anchorage by root tension. Just turn the jack equipped device can effectively prevent when tension the jack and strand rotation.Tension can also be self-locking anchor and anchor top pressure. Required to anchor top pressure,install in the jack of the top pressure control,and install FL in the oil pump on the way shunt valve. YCQ10Q-type cassette jack before is mainly used for transfer or test cable tension by tightening the root,retired anchor.

transfer or test cable tension by tightening the root,retired anchor.