This standard prescribes the requirements for lifting chains, Grade T (8), accurately calibrated for use as load chains in pulley blocks and other lifting appliances. These are electrically welded round steel short link chains, fully heat-treated and tested and comply with the general conditions of acceptance of IS : 5616-l982〓.
The sizes from 5 to 20 mm are covered in this standard.
IS 6216-1982 history
1982IS 6216-1982 Short Chain Specification Class T (8) Calibration of Pulley Blocks and Other Lifting Equipment