→Used for testing electric separated hydraulic jacks, oil jacks, hydraulic jacks for prestressing, thin hydraulic jacks, piercing jacks, large tonnage, special large stroke, standard type, non-standard type and other specifications.
→We have got Jacks patent. The patent No.: ZL 2012 2 0576295.3.
→Standard: JJG621-2012 Verification Regulation for Hydraulic Jacks, JG/T321 Hydraulic Jacks for Prestressing.
→Terms: load efficiency, internal leak.
→Calibration items: relative resolution, indication repeatability, indication error, load efficiency, interpolation error.