Intego: Graphite peteroli coke GPC ikozwe muri peteroli nziza ya peteroli. Nubwoko bwiza bwa carburizing agent, hamwe na karubone ihamye, sulfure nkeya, ivu rike, umuvuduko mwinshi hamwe nibindi byiza. Irashobora gukoreshwa mugukora ibyuma byujuje ubuziranenge, ibyuma hamwe na alloy.
