ʻO UHP 300mm graphite electrode kā mākou huahana nui. Ke koho nei kēia huahana i ka coke needle kiʻekiʻe, ma o ka hoʻokumu ʻana, ka ʻala ʻana, ka macerating, ka graphitization a me ka hana mechanical a hana ʻia, e like me nā mea conductive kiʻekiʻe no nā kapuahi arc.