Crane parts are mostly used in cranes with large lifting capacity or for lifting steel buckets. The hook is often impacted during operation and must be made of high-quality carbon steel with good toughness. The laminated hook is also divided into single hook and double hook. The single hook is used for cranes with a lifting capacity of 37.5-175t, and the double hook is used for cranes with a lifting capacity of more than 100t. The tasks that sometimes need to be completed in one day before refitting can now be completed in half a day, which makes full use of the auxiliary winch wire rope that has been idle for a long time, prolongs the replacement cycle of the main winch wire rope, and achieves good economic benefits. Distance transportation requires professional planning, because dealers face the risk of force majeure, such as truck failure or delay caused by other reasons. The risk arises not only from the long distance, but also from the size and complexity of the load. With more cars, there are more potential risks of failure.