During the operation, the lifting point must be confirmed according to the weight, volume and shape of the lifting object, and appropriate lifting slings must be selected. When using the snap ring, it is forbidden to force the snap ring laterally. Before lifting, check whether the closing pin is tightened. The snap ring with cracks and deformation shall not be used. It is forbidden to repair the snap ring by welding.

When selecting the sling specification, the size, weight, shape of the load to be lifted, as well as the service mode coefficient affected jointly by the lifting method to be used must be included in the calculation. The requirements for the ultimate working force given must be taken into account. At the same time, the working environment and the type of load must be considered.