... , RPI, HP, UHP used for arc furnaces Graphite Electrodes:-grade:RP, RPI(HD), HP, UHP-dia. 75-600mm; length:500- ... .20.3*male-female graphite electrodes: we can produce other grade also according to customer’s requirements.*we can produce to ... meet with customer’s requirements. Graphite Electrodes with grade RP RPI HP UHP