Semi GPC (SGPC) sitere na oyi akwa mkpuchi nke acheson furnace. Okpomọkụ graphitization dị n'etiti 1700-2500ºC. Ọ bụ ngwaahịa graphitization okpomọkụ themedium. Ọ bụ recarburizer dị ọnụ ala yana nnukwu carbon edobere, obere ọdịnaya sọlfọ, ọnụego mgbaze ngwa ngwa na ọnụego nnabata dị elu.
