Igishushanyo cya peteroli ya kokiya (0.2-1mm) nka Recarburizer yo gushonga no kugabanya
Igishushanyo cya peteroli ya kokiya ikozwe muri kokiya ya peteroli nziza cyane munsi yubushyuhe bwa 2800ºC. Kandi, yakoreshejwe cyane nka recarburizer mugukora ibyuma byujuje ubuziranenge, ibyuma bidasanzwe cyangwa izindi nganda zijyanye na metallurgjiya, kubera karubone nyinshi, karubone nkeya, azote nkeya, nigipimo kinini cyo kwinjiza.
