1.Inkingi ya Steel, Igiti: Ndumuri hamwe na galvanisation ishyushye
2. Ibikoresho by'inkoko: ibiryo by'ibiryo nyamukuru silo, akazu n'ikadiri, umurongo wo kugaburira, sisitemu yo kunywa, sisitemu yo koza ifumbire yikora, gukusanya amagi, guhumeka, kugenzura ibidukikije no gucana
