Hydraulic wrench used in a wide range; in the ship engineering, petrochemical, wind power, hydropower, thermal power, mining, machinery, steel, rubber, pipe and other industries construction, maintenance, repair work, hydraulic torque wrench for large size bolts Of the installation and removal are a more important tool; there are other tools irreplaceable, not only easy to use, and provides the torque is very accurate, torque repeatability of about ± 3%.

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The hydraulic wrench has two series of drive hydraulic wrench and hollow hydraulic wrench. As the name suggests, the drive hydraulic torque wrench is driven by the drive shaft to achieve the appropriate specifications of the sleeve to achieve the preload, as long as the torque range allows the case, according to replace the corresponding high-strength sleeve to complete the different specifications of the bolt, Hydraulic wrench, a wider range of applications. The hollow hydraulic torque wrench is equipped with a transition sleeve. Generally longer in the screw out, the space is relatively small, double nuts, bolt spacing is too small, nuts and equipment wall is too small, or some specific industry more difficult conditions.