What is the standard of lifting hook?
The core shaft should be scrapped when the core of the hook is worn up to 5% of the original size
When the wear of the hook bushing is up to 5% of the original size, the liner shall be scrapped
The dangerous section or the hook neck produces the plastic deformation
The wear of dangerous section reaches the original size of 10%.
Automobile crane hook opening than the original size _ should be rejected.In addition, the lifting hook occurs in one of the following circumstances, should be scrapped:
