Steel lifting chain is used in lifting and carrying loads in different sizes. Chain is one of the first achievements of mankind after the production of steel, which was initially used to carry stone, wood and even in slavery. Load steel chains in different sizes are often used from 6 to 18 mm in loading and in the production of chain slings. In addition to the steel chain sling, it is used on many load lifting machines, including on chain overhead cranes (manual and electric), on polylifts and even on many winches that are produced as chains. The most widely used grade of loading steel chain is the G80 grade, which has an approximate tensile strength of 550 N/mm2.