According to UL467 standard, our copper bonded ground rods adopt special electroforming technology to apply 99.9% pure copper uniformly to distribute on low carton steel core so as to make copper and steel core to combine perfectly.
It has characteristics as below:
1) Thickness of the copper layer is more than 0.254mm
2) Our ground rods can be bended through a 30 or 90 or 135 degrees angle, and the rods will be no evidence of cracking or splitting of the steel or the copper cladding
3) The advantages are good tensile strength more than 580N/mm2
4) Good in anticorrosion that usage-life is more than 50 years or more, constant low resistance and good plasticity which had the characteristics of copper as well as steel .
We can supply you three shapes as:
1) Ground rod can be made double heads thread, thread can be packed by plastic sheath
2) One end is pointed and the other end is threaded for extend
3) One end is pointed and the other end is un-threaded ground rods produced by us are high in protection against natural corrosion and electrochemical reaction when rooted deeply in ground.
Ground rods and grind wirings are welded by heat melting welding agent from our company so that the grind devices are wholly protected by the copper which is really ground device free of maintenance.