Semi GPC (SGPC) inobva pachikamu chekudzivirira kupisa cheAcheson Furnace. Tembiricha yegraphitization iri pakati pemhando dzakasiyana.ye 1700-2500ºC. Ndeye themedium temperature graphitization product. Inogadzirisa zvinhu zvishoma inekabhoni yakasimba, sarufa yakaderera, kukurumidza kunyungudika uye mwero wekunyudzwa kwakanyanya.