I-petroleum coke (GPC) enegrafiti ephezulu yenziwe nge-petroleum coke esemgangathweni ophezulu phantsi kobushushu obuyi-2,500-3,500°C. Njengezinto zekhabhoni ezicocekileyo kakhulu, ineempawu zomxholo wekhabhoni ozinzileyo ophezulu, isalfure ephantsi, uthuthu oluphantsi, i-porosity ephantsi njl. Ingasetyenziswa njenge-carbon raiser (Recarburizer) ukuvelisa intsimbi esemgangathweni ophezulu, isinyithi esityhidiweyo kunye ne-alloy. Ingasetyenziswa nakwiplastiki nakwirabha njengesongezelelo. Ingasetyenziswa njenge-carbon raiser (carbon additive.recarburizer) ukuvelisa intsimbi esemgangathweni ophezulu, isinyithi esityhidiweyo kunye ne-alloy. Ingasetyenziswa nakwiplastiki nakwirabha njengesongezelelo.
