... Length available:48"/60"/72"/84"/96" Product Name: RP Graphite ElectrodeGrade: There are four types of graphite electrodes made ... in Sanli Carbon: RP, PI grade, HP, and UHP.Technical Parameter:Graphite electrode ... high temperature resistance , corrosion resisting and wear resistance, graphite electrodes (RP ,HP ,UHP) are widely used in steel-making, refining , ...