I-coke ye-petroleum ehlanjululwe nge-graphitized (GPC) eyenziwe nge-coke ye-petroleum esezingeni eliphezulu ngaphansi kwezinga lokushisa elingu-2,500-3,500°C. Njengezinto zekhabhoni ezihlanzekile kakhulu, inezici zokuqukethwe kwekhabhoni okuqinile okuphezulu, isibabule esiphansi, umlotha ophansi, ukugeleza okuphansi njll. Ingasetshenziswa njenge-carbon raiser (Recarburizer) ukukhiqiza insimbi esezingeni eliphezulu, insimbi ehlanganisiwe kanye ne-alloy. Ingasetshenziswa futhi epulasitikini kanye nerabha njengesithasiselo. Ingasetshenziswa njenge-carbon raiser (carbon additive.recarburizer) ukukhiqiza insimbi ehlanganisiwe, insimbi ehlanganisiwe kanye ne-alloy. Ingasetshenziswa futhi epulasitikini kanye nerabha njengesithasiselo.
