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GRD copper bonded ground rods meet all the requirements of the world’s most rigorous standard such as UL-467,ANSI C-33-8,CE B-S10030250 .Carbon steel core coated with an electrolytic copper layer,which is minimum 99.9% pure with no trace of zinc.The copper layer is bonded to steel core through an electrolytic process ,which is the most advanced 4-dimensional continuous plating method,which ensures a perfect and even bonding between the copper and steel. The rod finishing is brilliant,free of imperfections or peelings. Technique Parameters: 1.For UL and CE standard ground rod.copper thickness equals or exceeds 0.254mm. 2.Electricity resistivityless than0.059Ωmm2. 3.Tensile strength equals or exceeds 600N/mm2. 4.Anti-corrosion:put in concentration of 10% nitric acid,soaking for more than 90 hours,no corrosion weight lossequals or exceeds 15%. 5.Copper bonding strength: sustain heat above 300 °C up to 1 hour after the quench,the copper layer is not peeled off. 6.Copper coating plasticity: bend the ground rod to 180 degree,the copper layer doesn’t break or peel. Actual Diameter(mm)Customizable Length(m)CopperThicknessThread Sizes12.71 3.05m0.025mm-1mm9/1614.21 3.05m0.025mm-1mmM16.5/816.01 3.05m0.025mm-1mmM1817.21 3.05m0.025mm-1mm3/418.01 3.05m0.025mm-1mmM2020.01 3.05m0.025mm-1mmM2222.01 3.05m0.025mm-1mmM2425.01 3.05m0.025mm-1mmM27