The scope of the 80 -level lifting chain is relatively wide. It is usually used as parts of other devices. Its raw material is round steel with 20mn2. The production process is made of round steel brushed, editing chain, dipping fire, welding, heat treatment, and other steps. The editing chain welding is made of automatic equipment. The temperature required for heat treatment and the temperature of the need to quench and recover can achieve the required strength and tension. The price of the chain is expensive, depending on the price of raw materials and the production process, mainly to say the quality of the chain.