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Load test shall be carried out for new hook, and the measured opening of hook mouth shall not exceed 0.25% of the original opening. During use, the hooks shall be frequently checked for cracks, serious deformation, corrosion and wear. The hook shall be tested once a year. During the test, the static test shall be carried out with 1.25 times of the allowable working load for 10min. The magnifier or other methods shall be used to check that there shall be no cracks, cracks and residual deformation.
Hook is the most common lifting appliance in hoisting machinery. The hook is often suspended on the wire rope of the hoisting mechanism by means of pulley block and other components. The hook shall be manufactured by a formal professional manufacturer according to the hook technical conditions and safety specifications, and the product shall have the manufacturer's quality certificate, otherwise it is not allowed to use.
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Jiangxi Runyou Machinery Co., Ltd.