Whether the wire rope is scrapped depends on the degree of wire breakage of the steel rope and some other conditions:
1. The number of broken wires of the hoisting wire rope in one twist pitch is up to 10% of the total number of wire ropes.
2. If the radial wear or corrosion of the wire exceeds 40% of the original diameter, it should be scrapped. If it is less than 40%, the broken wire can be scrapped according to the regulations.
3. The number of scrapped wire ropes for lifting red-hot metal or dangerous goods by lifting machinery should be one half of the scrapped wire ropes for general cranes
4. For the structural steel wire rope that conforms to ISO2408 (characteristics of general purpose steel wire rope) standard, the number of scrapped broken wires should be implemented according to the number specified in GB5972-86.
5. The whole rope should be scrapped if it breaks.
6. When the diameter of the wire rope decreases by 7% or more compared with the nominal diameter, even if no broken wire is found, the wire rope should be scrapped.
7. Hemp core exposed should be scrapped.
8. The wire rope should be scrapped if it has obvious corrosion.
9. Part of the outer wire with elongation cage state should be scrapped
10. Wire rope shall be scrapped as below status:
A. Steel wire extrusion
B. Single wire rope core extrusion
C. Wire rope strand extrusion or distortion
D. Some parts are flattening
E. Forward or reverse twisting of wire rope
F. Wire rope surface broken
G. Internal rope strand protrusion
H. Parts of diameter increase by 5%