... RP, PI grade, HP, and UHP.Technical Parameter:Graphite electrode is a major conduction material used in the electric smelting ... corrosion resistance in high temperature. Graphite electrode is typically used in the electric arc fumace smelting steel, the ... corrosion resisting and wear resistance, graphite electrodes (RP ,HP ,UHP) are widely used in steel-making, refining ,phosphorous chemicals ,metal ...