Crane users need high-quality steel wire rope, which should have long service life, high stability and reliability. Fretting fatigue is the main reason for the failure of steel wire ropes used in atmospheric environment. At present, the first preventive measure against fretting fatigue in the field of steel wire rope in the world is phosphating coated steel wire rope produced by patented technology. After manganese phosphating or zinc-manganese treatment, the wear resistance and corrosion resistance of steel wire surface are improved in an all-round way, and the fatigue life of steel wire rope is greatly improved, which is three times that of smooth steel wire rope with the same structure. The comparison of the highest test values is four times, which can be verified by fatigue test. If you have your own fatigue testing machine, you can do your own comparative test. This test result is the most credible. The service life of steel wire rope is proportional to the fatigue life, while the fatigue life is prolonged in the same proportion, with lower use cost and better stability. Phosphate coated steel wire rope is produced by patented technology, and it is difficult to buy it because it is in short supply, so ask the wire rope manufacturer more. Please note that the name of wire rope, such as phosphating coated wire rope, must be indicated on the purchase invoice to prevent illegal enterprises from infringing their legitimate rights and interests. In addition, patented products will generally be marked with the patent number on the outer package of steel wire rope, and the warranty should have the main technical indicators, such as the type and weight of phosphating film (phosphating film has an important impact on the service life of steel wire rope, such as wear resistance and corrosion resistance, etc.), for reference only.