... since 1990 G80 D ring with spring G80 D Ring with Spring Rigging Hardware and Tempered/Quenched Heat ... TreatmentMaterials: alloy steelSurface treatment: powder coatedHeat treatment: tempered and quenchedSizes: 1T, 3T, 5TBreaking load ... : 4 times to working load limitQingdao Hidea Industrial Co.,Ltd, a ...