Lolu hlobo lwe-graphite electrode lwenziwa ikakhulukazi nge-petroleum coke. Ivunyelwe ukuthwala ukuminyana kwamanje ngaphansi kuka-12~14A/㎡. Ngokuvamile isetshenziswa esithandweni somlilo esivamile sikagesi se-arc ekwenzeni insimbi, ukwenza i-silicon, ukwenza i-phosphorus ephuzi njll.