While producing copper bonded earthing rods, how copper is bonded to the steel core is essential to the performance and longevity of the rod. Two commonly practiced bonding processes are mechanical bonding and chemical bonding, but they are very different in terms of process and efficacy. Mechanical Bonding Mechanical bonding is done by physically bonding a layer of copper onto ... https://www.pioneerpowers.com/copper-bonded-earth-rod.php