The port lifting, small car cranes and mine shaft hoisting steel wire rope use the 18*7 type of multilayernon rotating wire rope. The structure of the wire rope is Valin style. The inner and outer twisting moment of the inner and outer layers makes use of the inner and outer rotation torque to make the wire rope have the characteristics of micro non-rotation, so we can say 18*7. The wire rope is especially suitable for the occasion of single rope lifting. The ordinary point contact and wire contact wire rope is a single layer twisting system, so the force lifting load often revolve and has great influence on the construction work. The non-rotating wire rope of class 18*7 is divided into two kinds of core and steel core. We often label the 18*7+FC core and the 18*7+IWS steel core category. In many cases, we refer to 18*7+IWS for abbreviated as 19*7. As a steel core rope, 19*7 plays a very good supporting role in the rope strands during the production of wire rope, and in the load stage, it can effectively share the part of the load and withstand the advantages of 19*7 when it is resistant to high temperature and extrusion. The 18*7+FC rope core rope makes the softening and bending properties of the wire rope further strengthened, and the oil storage capacity of the rope core rope is strong, the lubrication effect is good, and the wear and corrosion of the inner steel wire can be slowed down.