What is the required strength rating for a 5/8-inch chain used in securing metal coils with a working load limit of 13,000 pounds?

The required strength rating for a chain used in securing metal coils is determined by the working load limit (WLL) of the load being secured. In this case, with a working load limit of 13,000 pounds, the chain must have a sufficient strength rating to safely handle this load.

A G43 chain, also known as transportation chain, is rated for higher working load limits and is specifically designed for heavy-duty applications such as securing metal coils. It has a minimum breaking strength that exceeds the operational demands imposed by a 13,000-pound load, making it suitable for this scenario.

In contrast, other chain ratings like G30, G50, and G25 may not provide the required safety margin or may not be designed for the level of load being handled. Ensuring that the chain exceeds the working load limit is crucial for safety and compliance with industry standards when securing heavy items like metal coils.