Grade 70 chain is known for Transport chain. It is widely used for towing industry. Transport chain in towing industry is considered for load binding applications. Grade 70 chain is light, and yet strong. Grade 70 chain assembly strength to pound ratio is better than that of grade 40 chain assemblies. Grade 70 chain meets DOT requirement. Grade 70 chain assembly should never be used as overhead lifting. The material for grade 70 chain assembly is high strength and heat treated steel. Towing Parts Outlet only uses premium material to ensure the safety and quality.