CPRI tested and certified copper bonded rod earth electrodes are made of low-carbon steel of superior grade and quality, with a high tensile strength of at least 600N/mm2. 250 microns of copper is molecularly bonded to nickel sealed steel rods to avoid copper to steel merging. This provides ensured performance and double protection as required under UL 467 and IEEE spec which by our in-house testing making sure that our copper bonded rods are excellent in corrosive soil.