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　　Semi-enclosed hook group is an important part of lifting equipment. Its own advantages and disadvantages directly affect the operation of the entire lifting equipment and is already a safety issue in engineering construction. Therefore, we must conduct strict inspections of the hook group. If there are any problems, it cannot be used again to prevent the occurrence of danger. Under what circumstances, the hook group needs to be scrapped? Are there unified standards? Scrap Standard: When the following situation occurs in the hook group, it should be scrapped:

　　1. Cracked;

　　2. The wear of dangerous parts reaches 10% of the original size;

　　3. The opening degree increases by 15% compared to the original size;

　　4. The twisting deformation of the hook body exceeds 10°;

　　5. The neck of the hook group undergoes plastic deformation;

　　6. The wear of the hook group reaches 50% of the original size;

　　7. The hook group has severe wear, and the mandrel should be replaced.

　　Semi-enclosed hook group is an important part of lifting equipment. Its own advantages and disadvantages directly affect the operation of the entire lifting equipment and is already a safety issue in engineering construction. Therefore, we must conduct strict inspections of the hook group. If there are any problems, it cannot be used again to prevent the occurrence of danger. Under what circumstances, the hook group needs to be scrapped? Are there unified standards? Scrap Standard: When the following situation occurs in the hook group, it should be scrapped:

　　1. Cracked;

　　2. The wear of dangerous parts reaches 10% of the original size;

　　3. The opening degree increases by 15% compared to the original size;

　　4. The twisting deformation of the hook body exceeds 10°;

　　5. The neck of the hook group undergoes plastic deformation;

　　6. The wear of the hook group reaches 50% of the original size;

　　7. The hook group has severe wear, and the mandrel should be replaced.