Graphitized Petroleum Coke (GPC) ndi chinthu chofunikira kwambiri pamakampani opanga zitsulo, chomwe chimagwiritsidwa ntchito kwambiri ngati chokweza mpweya (recarburizer) popanga zitsulo ndi kuponya. Amapangidwa kudzera mu graphitization yotentha kwambiri ya petroleum coke pa 2,500-3,500 ° C, yomwe imadziwika ndi kuchuluka kwake kwa kaboni, sulfure yotsika, komanso milingo yotsika yonyansa. GPC imadziwika ndi kuchuluka kwa mayamwidwe ake, magwiridwe antchito okhazikika, komanso kuchita bwino pochepetsa zinthu zovulaza monga sulfure ndi nayitrogeni muchitsulo chosungunuka. Izi zimapangitsa kukhala chinthu choyenera kupanga chitsulo chapamwamba, chitsulo chosungunuka, ndi ma alloys.
