What is the scrap standard of type C hook
C hook should be scrapped when one of the following situations occurs:
②Dangerous section wear reaches 10% of the original size.
③The opening degree is increased by 10% compared to the original size.
④The torsion deformation of the hook body exceeds 10°.
⑤The dangerous section of the C-type hook or the neck of the hook is plastically deformed.
⑥ The hook thread is corroded.
⑦When the hook bushing wears up to 50% of the original size, the bushing should be replaced.
⑧When the hanging hole of the hook and the crown block is worn out to 5% of the original size, stop using it.
C-type hook safety inspection:
1. The hook used for the lifting mechanism driven by manpower is tested with 1.5 times the rated load as the inspection load.
2. The hook used for the power-driven lifting mechanism shall be tested with 2 times the rated load as the inspection load.
3. After the hook is unloaded for inspection, there should be no obvious defects and deformation, and the increase in opening degree should not exceed 0.25% of the original size.
4. For hooks that have passed the inspection, a mark should be printed in the low-stress area of the hook, including the rated lifting weight, factory mark or factory name, inspection mark, production number, etc.