Otioti mea: Uamea mamago malulu sawing e talafeagai mo le gaosiga maualalo uamea, feololo ma maualalo carbon uamea, lafo uʻamea, uʻamea fausaga ma isi vaega uʻamea ma se maaa i lalo HRC40, aemaise lava modulated vaega uamea.
Mo se faʻataʻitaʻiga, uʻamea lapotopoto, uʻamea tulimanu, uʻamea faʻailoga, uʻamea alalaupapa, paipa sikuea, I-beam, alumini, paipa uʻamea (pe a tipiina paipa uʻamea uʻamea, laupepa uʻamea faʻapitoa e tatau ona sui)