- Jan 11, 2018 -
1, the human-driven lifting mechanism used by the hook to 1.5 times times the rated load as a test load.
2, the power-driven lifting mechanism used by the hook, twice times the rated load as a test load.
3, Hook unloading to check the load, there should be no obvious defects and deformation, opening degree of increase should not exceed the original size of 0.25%.
4, the inspection of qualified hooks, should be in the hook low stress zone printing marks, including the rated weight, plant or factory name, inspection marks, production numbers and so on.
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