Section R. 408.14925 - Repairing; reconditioning, and proof testingRule 4925.
(1) A worn or damaged alloy steel chain sling or attachment shall not be used until repaired.(2) When welding or heat treating is performed, a sling shall not be used unless repaired, reconditioned, and proof tested by the sling manufacturer.(3) A mechanical coupling link or low carbon steel repair link shall not be used to repair broken lengths of chain.Mich. Admin. Code R. 408.14925