... ,easy install 3.Heat treatment,more strength 4.CE,ISO Earth rodmainly used for oil and chemical, electrical, telecom, airport ... , railway, computer room, oil storageField of application: 5. The copper layer plasticity: the copper earth rods bent 1800, copper layer without ... : working life more than 30 years, relieve the maintenance cost of earth rod.3. Tensile strength: >=500N/mm2. Resistivity: <=0.05 ...