copper-clad steel
Copper coated steel grounding rod is a special electroplating technology that uniformly covers 99.9% pure copper onto a low-carbon steel core, allowing copper to completely bond with the steel core (if the two are not tightly bonded, under the condition of electricity, a primary battery reaction will occur, and the anode metal iron will undergo oxidation reaction to become iron ion loss, which will accelerate the corrosion of the steel core). It has the characteristics of copper layer thickness (above 0.25 millimeters), good adhesion, and non stripping (can roll threads).
