In truck tensioner lifting and hoisting operations, depending on the heavy-duty tools applied by the tensioner manufacturer, the slings are generally not less than 45 degrees or they can cause problems. For high temperature slings, the temperature limit is usually 400 degrees, but at this time, the load on the sling is reduced. Slings are rigid pick-up devices used for lifting and hoisting operations, i.e., devices that can directly lift items, such as hooks, grabs, clamps, suction cups, etc., all of which are in one of the slings. Wire rope is also one of the rigging, so it is essential to understand the assembly, otherwise the knowledge system will be incomplete and unfavorable for us to learn.