He hua na te oumu LWG.Ka whakamahia te tiihi hinu hei taonga whakamahana wera i te wa e whakaahuahia ana te hiko.I te taha o te tukanga graphitization, kei a maatau te hikohiko kauwhata, me te kohu hinu hinu-a-hua.Ko te matūriki me te rahi o te 2-6mm ka whakamahia ake hei recarburizer.Ko te matūriki pai ka mata motuhake.