Gaosiga

I le 35 tausaga ua tuanaʻi, na vaʻaia ai e le uʻamea ma uamea le galuega. In 1980 716 mln tonnes of steel was produced and the following countries were among the leaders: USSR (21% of global steel production), Japan (16%), USA (14%), Germany (6%), China (5% ), Italia (4%), Farani ma Polani (3%), Kanata ma Pasila (2%). E tusa ai ma le Lalolagi Steel Association (WSA), i le 2014 SAMB Wedpel gaosiga i le 1665 mlt tone o le 1. O le lisi o le malo malo ua suia taua tele. Saina tulaga muamua ma e mamao atu i luma o isi atunuʻu (60% o le lalolagi Steboal Steel gaosi) Korea ma Lusia (5%), Siamani (3%), Turkey, Pasila ma Taiwan (2%) (Vaai le Ata 2). E ese mai Saina, isi atunuu na faʻamalosia ai o latou tofiga i le pito i luga-10 o Initia, Korea i Saute, Parak.

Taumafaina

Iron i ona fomu uma (lafo uʻamea, swel ma faʻaseʻe uʻamea) o le sili ona faʻaaogaina mea fausiaina i le tamaoaiga faa-lalolagi. O loo taofia le nofoaga taua i le fauina o fafie, tauva ma le fegalegaleai ma le fesoʻotaʻiga ma ia (Ferroconcrete). Mo le tele o tausaga, ae faʻaaoga e le inisinia ituaiga mea e sili atu nai lo isi alamanuia. O le taumafaina o le lalolagi ua taumafaina e se aga i luga. O le averesi o le tuputupu aʻe o le taumafaina o le taumafaina i le 2014 o le 3%. O le faʻatupulaia tuputupu aʻe e mafai ona vaʻaia i atunuʻu atiaʻe (2%). Atinaʻeina atunuʻu e maualuga le maualuga o le uamea taumafaina (1,1,133 mln tone).