10mm lifting chain, which is widely used in G80 chain, can be used not only in chain block, but also in electric hoist. It can also be made into slings for use. The line diameter of 10mm lifting chain is 10mm, and the inner length is 30mm. The production process of the chain is complex, and the automatic equipment is used for splicing and welding, and after many times of correction, the pitch standard of the chain is guaranteed, and the error is small. When used in chain block, the chain is smooth and not stuck, and after quenching, the chain has large tension and high hardness. The surface of chain block can be polished and coated with antirust oil. It can also be blackened. The surface is black, delaying the chain from rusting.