bicycles and hoisting chains for hand-operated pulleys. There are many specifications of lifting chains. The G80 lifting chain is made of manganese steel. There are many models and specifications of lifting chains, with a common 10mm lifting chain capable of pulling loads up to 3.2 tons. The weight that different specifications of chains can lift also varies; an industrial lifting chain with a 20mm diameter can support loads up to 12.5 tons. During use, we must also pay attention to the maintenance and care of the chains, promptly detecting and dealing with wear and tear to ensure the normal operation of the lifting chains. Lifting chains need to maintain a clean surface and should be regularly maintained and serviced.