الوصف

***** is eliminated and the bolt is load with PURE tension ***** stroking the piston will release pressurized oil ***** pre-load will prevent bolt failure during tightening 4.Working pressure of *1, **0psi 5.Hydraulic Bolt Tensioners can be used to tighten amounts of Bolts simultaneously with same load. The equal preload of each Bolt is achieved 6.Precision tightening load is obtained by stretching force acting on Bolt directly ***** tensioner/Bolt ratio can reach to *0%, which provide high efficiency of tightening and loosening bolts