What type of chains are specified as a standard for securing metal coils?

The choice indicating 3/8-inch and 7/16-inch chains is recognized as the standard for securing metal coils due to their specific strength and durability characteristics. These sizes provide a balance of flexibility and load-bearing capacity, making them suitable for the weight and dimensions of metal coils during transport. This ensures that the coils remain secure and do not shift or move, which could lead to safety hazards on the road.

Using chains that are either too small or not robust enough could result in inadequate protection and increase the risk of accidents or damage during transportation. The specified sizes are commonly accepted in industry practices to meet safety regulations and standards related to the securement of heavy loads.