Graphite electrodes: Regular power grade, Resistivity (max): 9.0/8.5m High power grade, Resistivity (max): 7.0/6.0m S-High power grade, Resistivity (max): 6.5/5.5m Utra high power grade. Resistivity (max): 6.0/5.2m Dia: 75mm-700mm( 1mm), Len: 1000mm-2400mm( 100mm) Specification: According to customer's requirement. Graphite product widely applied in Steel-making of electrical arc furnace and smelt of yellow phosp