Grade 30 proof coil chain is a heavy duty, high strength, welded steel chain, it is designed for use in towing, binding, logging and other applications requiring high strength chain, grade 30 is an excellent all-purpose commercial quality chain.
Grade 30 chain is a low carbon steel and an economical general purpose chain also known as "proof coil chain"
Grade 3 chain can be used in applications which do not require a high strength to weight ratio, chain links are welded
Suggested applications - general purpose chain, used for tail gates, trailer chains, etc