About Product:This product quality assurance, the price discount factory straight hair mother ring is also called as the strong son mother ring, mainly, informs the for the three - limb/four - limb chain hoisting rigging. Three - limb/four - limb steel wire rope rigging and hoisting belt hoisting rigging and other assembling, Belonging to the bearing rings. The sub-mother ring of our company belongs to 80 grade high strength lifting ring, the breaking tension is more than 4 times, the strong tension is strong, The toughness is high, adopt low carbon alloy forging heat treatment, the surface paint treatment is the spray plastics.