Coke ya peteroli ifite isuku nyinshi (GPC) ikozwe muri kokiya ya peteroli nziza cyane munsi yubushyuhe bwa 2500-3500 ° C. Nkibikoresho bya karubone bifite isuku nyinshi, bifite ibiranga ibintu byinshi bya karubone bihamye, sulfure nkeya, ivu rike, porotike nkeya nibindi.Bishobora gukoreshwa nka carbone raiser (Recarburizer) kugirango bitange ibyuma byujuje ubuziranenge, ibyuma bikozwe mu byuma ndetse n’ibisigazwa. Birashobora kandi gukoreshwa muri plastiki na reberi nk'inyongeramusaruro. Irashobora gukoreshwa nk'icyuma cya karubone (icyongeweho cya karubone).