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Working Load Limit
Working Load Limit(WLL):
The maximum load that may be applied to a component of a cargo securement system during normal service, usually assigned by the manufacturer of the component, for different kind of tie down devices, the ways to apply load are different, for instance, the WLL of grade 70 transport chain is the maximum load shall be applied in direct tension to an undamaged straight length of chain. WLL sometimes is called safe working load.