Hydraulic Stressing Jack Center Hole Jack Bridge Equipment Send Inquiry Working principle: 1. The basic element of a post-tensioning system is called a tendon. Post-Tensioning | Advanced Post Tension ISO Bridge Erecting Machine Prestressed Post Tension Mono Strand Stressing Jack . Multi Purpose Post Tension Bridge Erecting Machine 50MPa Hydraulic mono strand stressing jack for bridge - mono strand stressing jack for Calculate the cut length of Strand inclusive of Jack Grip . // -->