Scrap standard for lifting mechanical hooks
GB10051.2-88. When the hook appears in one of the following conditions, it shall be scrapped: 1. Crack; The risk section wears up to 10% of the original size; Increase the opening level by 15%.
GB 6067-1985 crane mechanical safety procedures There are technical requirements and scrap standards for hooks in this standard
Increase the opening level by 15%. 4. The torsional deformation of more than 10 °; Plastic deformation in the neck of a dangerous section or hook. The liner should be scrapped when wearing 50% of the original size. The shaft of the plate shall be scrapped when the axis of the hook is worn at 50% of the original size
