Obere electrode graphite dayameta, nke ejiri dayameta sitere na 75mm ruo 225mm, a haziri electrodes ndị a maka ịrụ ọrụ mgbaze nke ọma. Ma ị chọrọ mmepụta nke calcium carbide, nnụcha nke carborundum, ma ọ bụ smelting nke obere ọla, na Ferrosilicon osisi refractory need.our obere dayameta graphite electrodes na-enye ezigbo ngwọta.