Wire rope slings are processed from steel wire ropes. The ropes mainly used for hoisting, traction, tensioning and load-bearing are called steel slings. Wire rope sling has the characteristics of high strength, light weight, stable work, and not easy to be broken suddenly. It is widely used in steel, chemical, transportation, port and other industries. The types of steel wire ropes used are phosphated coated steel wire rope, galvanized steel wire rope, stainless steel wire rope and smooth steel wire rope. Among them, the galvanized steel wire rope has corrosion resistance, and the phosphate coated steel wire rope has abrasion and corrosion resistance.