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About JHJX:JHJX Machinery Manufacturing Co.Ltd was established in 1992 specialized in manufacturing hydraulic torque wrench, bolt tensioner,electric/pneumaitc torque wrench, torque calibration equipment. JHJX working with advanced CNC machining equipment focus on large bolts and nuts tightened, unpacking technology and power hydraulic practical research. JHJX products are widely used in mines, power plants(wind power, hydropower, thermal power, nuclear power) metallurgy, aerospace, shipbuilding, petroleum, chemical, railway, machinery manufacturing and other industries all over the world.JHJX is committed to providing customized bolts, nuts, solutions and full , complete technical support services.Our company has a factory and office covering 12,000 square meters in Ma···


Hydraulic torque wrench come out because of the bolt tightening and loosening. It plays a very important role in the world mining, metallurgical, power generation, wind power energy, ship building, oil and gas, steel, offshore any industry regarding to the bolt solution.People used to tight the nut
2025-11-09
One: JHJXHydraulic torque wrench case study:Using socket to help hydraulic torque wrench applying working condition.It is very common to face bolt distance too small between two adjacent bolt. See the flange below:The bolt size:M110(DIN Standard) Torque request: 49,098Nm The two adjacent
2025-11-09
The report is about the hydraulic torque wrench help tighten/loosen the bolt on flange/valve. JHJX offer a high quality reliable tools to help maintenance/install valve/flange in order to prevent leakages which ultimately guarantee the valve/flange sealing performance. The bolt solution
2025-11-09
Below is a case of JHJX bolt tensioner application in bridge building.The report of bolt tensioner in industry application:The case shows the one pump driven four bolt tensioner at the same time. The reason why use bolt tensioner instead of hydraulic torque wrench is because of the accuracy.Bolt ten
2025-11-09+86 18117218107
