The level of the lifting chain is G80, so what exactly does he represent? G is the meaning of English Grade. For the chain, that is, the chain, the chain, bears the tension of 80 cows per square millimeter. The material uses 20mn2 alloy structure steel. This type of steel has a high tensile strength after the appropriate metal thermal treatment. Generally, manufacturers will printed the word G80 in the chain to indicate the level of the chain. Its carrying capacity is greater than the chain of level 70 and level 43. It is often applied in industry.