Mmanụ koke e sere ese - Ogo dị elu

A na-eji coke petroleum dị elu eme coke petroleum nke a na-ese n'elu eserese na okpomọkụ nke 2500-3000°C. Dịka ihe na-emepụta carburizing dị elu, o nwere nnukwu carbon a kapịrị ọnụ na obere sulfur. Ọ nwere obere ntụ ntụ, oke mmịpụta na ihe ndị ọzọ. Enwere ike iji ya mepụta ígwè dị elu, ígwè a kpụrụ akpụ na alloys, a pụkwara iji ya mee ihe dị ka ihe mgbakwunye maka plastik na roba.