Smooth steel wire ropes have no coating protection on the surface and are prone to wear and corrosion. The result of wear and corrosion is that the cross-sectional area of ??the steel wire continues to decrease, and the stress on the steel wire rope gradually increases. Wear causes damage on the surface of the steel wire. The damage is the origin of fatigue microcracks. The expansion of microcracks will cause the steel wire to break. The failure of steel wire ropes starts from the surface. The patented technology of manganese phosphate coated steel wire ropes achieves the purpose of improving the wear resistance and corrosion resistance of steel wire ropes through surface treatment. The fatigue life of manganese phosphate coated steel wire ropes is the fatigue life of smooth steel wire ropes. The service life is 3-4 times longer. The longer service life and lower cost of use are the biggest features of manganese phosphating coated steel wire ropes. Manganese phosphate coated steel wire rope is an upgraded product of smooth surface steel wire rope, and smooth surface will soon be eliminated.