O mea faʻapipiʻi na faia i le 2520 mea e aofia ai:
Ogaumu falegaosimea ma mea fa'auma: pei o fa'alava, fa'alava, ipu pito i lalo o le ogaumu, ipu fa'a'u'u, ma isi, fa'aoga i si'osi'omaga maualuga-vevela pei o ogaumu fa'avevela ma ogaumu fa'afefe.
Paipa -tete'e ile vevela: fa'aoga ile fauu eletise, mea fa'a-petrokimia, ma isi, e mana'omia le maualuga-tete'e o le vevela
Castings sa'o: pei o flanges, fale pamu, logo gutu, ma isi, faʻaaogaina i le petrochemical ma metallurgical alamanuia.
Fa'apitoa -tu'i fa'aoga: e pei o mea fa'amafana fa'amafana, vaega o le ashers, ma isi, fa'aoga i fa'ata'ita'iga fa'apitoa tau alamanuia.
