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 brushes, editing chains, quenching, 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. Some of the chain manufacturers will use round steels from Hengang and Ansteel, and Nanda Steel, and other steel mills as raw materials. Among them, the price of Nangang is more expensive, and the quality of the chain is also higher. The chain of relatively cheaper Handang and Ansteel is cheaper. There are also differences in crafts, and it is also important to control the quenching and recovery. The temperature is low and the hardness cannot be achieved, and the ignition cannot reach the required toughness. Since the ancient network, similar products are distinguished from prices. Of course, it is also based on the use and needs of customers.