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Technical information

Safety technical requirements for the hook

Human powered lifting mechanism for the hook, at 1.5 times the rated load as the test load test. The hook lifting mechanism for power driven, with 2 times the rated load as test load test. Remove the hook load test, should not have any obvious defects and increase the degree of deformation, the opening should not exceed 0.25% of the original size. The inspection should be on the hook hook, low stress area marking, including rated capacity, factory or factory, inspection marks, production number etc.. The hook hook scrapped in following cases should be scrapped:
The dangerous section wear up to 10% of the original size;
The opening is 15% higher than the original size;
The hook body torsional deformation of more than 10 degrees;
The dangerous section or hook hook neck plastic deformation;
The hook thread corrosion;
The hook bushing wear up to the original size of 50%, should replace the bushing;
The hook spindle wear up to 5% of the original size, should replace the mandrel.


Contact: ZHAO QIAN

Phone: 13733399927

Tel: 0312-8148888

Email: dingli@dinglisling.com

Add: Donglv Development Zone,Baoding City,Hebei Provice,China