Semi GPC (SGPC) yana daga rufin rufin tanderun acheson. Zazzabi na graphitization yana cikin kewayon 1700-2500ºC. Yana cikin samfurin jadawali zafin jiki. Yana da recarburizer na tattalin arziki tare da ƙayyadaddun carbon, ƙananan abun ciki na sulfur, saurin rushewa da ƙimar sha.
