Yakakwira-kuchena graphitized petroleum coke inogadzirwa kubva pamhando yepamusoro petroleum coke pasi petembiricha ye2,500-3,500 ℃. Seyakanyanya-kuchena kabhoni zvinhu, ine hunhu hweyakagadziriswa kabhoni yemukati, yakaderera sarufa, yakaderera dota, yakaderera porosity nezvimwe.
