The wire ropes commonly used for cranes are phosphating coated wire ropes, galvanized wire ropes, stainless steel wire ropes or plastic coated wire ropes, which are used in atmospheric environment. Manganese phosphating coated steel wire rope produced by patented technology has the longest service life, and the fatigue life of phosphating coated steel wire rope is 3-4 times that of smooth steel wire rope. Hot dip galvanized-phosphating double-coated steel wire rope has outstanding corrosion resistance and is the first choice in heavy corrosive environment. Phosphate coated steel wire rope is an upgraded product of smooth steel wire rope, which is for reference only.