A screwed bolt is subjected to two forces, one is downward and the other is upward.

Before using the rigging, the working load and the scope of application on the label must be clearly seen, and overloading is strictly prohibited.

After the rigging is used, it needs to be placed up for reuse. There are several points to note when storing.

When selecting the rigging specifications, the size, weight, shape of the load to be lifted, and the hoisting method to be used must be included in the calculation considerations, and the requirements for the ultimate working force must be included in the calculation.

Shackles are widely used in electric power, metallurgy, petroleum, machinery, railways, chemicals, ports, mining, construction and other industries.

Shackle, called shackle in English, is an indispensable rigging accessory in lifting construction operations. Shackle can be used to connect lifting pulleys and fixed slings.