... UL467 and BS7430. It is made from high quality low carbon steel, bonding 99.9% electrolytic copper molecular on the steel core, made ... spalling evidence on the steel or the copper cladding. The usage range is widely, the copper ground rod can be use in soil with ... . The copper ground rods was lower cost, so they are now widely using on power plant, communication system, airport, railway, high building, ...