fausaga uameao se fausaga e aofia ai mea uamea, o se tasi lea o ituaiga autu o fausaga fale. O le fausaga e masani ona aofia ai faʻalava, koluma uʻamea, uʻamea uʻamea ma isi vaega e faia i faʻailoga uamea ma ipu uamea. E faʻaaogaina le silanization, phosphating manganese mama, fufuluina ma faʻamago, galvanizing ma isi auala aveesea ele ma puipuiga ele. O vaega po'o vaega e masani ona feso'ota'i i le uelo, fa'amau po'o rivets. Ona o lona mamafa mama ma faigofie le fausiaina, e masani ona faʻaaogaina i fale tetele falegaosimea, taʻaloga, ma nofoaga maualuga maualuga. O fausaga uamea e faigofie ona pala. E masani lava, o fausaga uʻamea e manaʻomia ona faʻafefe, uʻamea pe vali, ma tausia i taimi uma.