Togafitiga muamua o paipa u'amea su'i sa'o: su'ega le fa'aleagaina i totonu o uelo. Talu ai o le paipa o se paipa uʻamea sili-tele i le galuega o le tuʻuina atu o le vai, aemaise lava le paipa uʻamea ma le mafiafia o t = 30mm faʻaaogaina e fai ma alalaupapa paipa. E tatau ona tatalia le mamafa o le vai i totonu ma le taimi o le punou na faia e le mamafa o le paipa uʻamea ma le tino vai, o le mea lea e maualuga tele le manaʻoga. Mo paipa u'amea tetele-diameter ma le mafiafia o le t = 30mm fa'aaogaina i alalaupapa paipa, o le su'isu'i longitudinal ma su'ega circumferential e lua Vasega I welds, e mana'omia 100% su'esu'ega ata tifaga X-ray ma le 100% su'esu'ega va'ava'ai; ae mo le tanumia o paipa uʻamea ma le mafiafia o le t = 24mm, o le suʻisuʻi longitudinal e aofia i le Vasega I uelo, ma 20% X-ray ata tifaga asiasiga ma 50% galu suʻesuʻeina o faaletonu o loʻo faia.

Fa'aoga o paipa uelo sa'o: E tele ituaiga o paipa uelo sa'o, e tusa ai ma le fa'aoga: paipa uelo lautele, paipa fa'afefe o le okesene, paipa uelo fa'ameamea, fa'alava uaea, paipa ta'avale, metric paipa uelo, paipa ta'avale, loloto. paipa paipa paipa, paipa transformer, paipa fa'apitoa fa'apitoa fa'apitoa, ma paipa pa'u manifinifi fa'aeletise.

O paipa uelo lautele: O paipa uelo lautele e faʻaaogaina e felauaiga ai vai maualalo. Faia i le Q235A, L245, ma le Q235B uamea.
Paipa u'amea u'amea: E fa'apipi'i le pito i luga ole paipa uliuli ile zinc. Ua vaevaeina i le vevela ma le malulu. O le vevela zinc layer e mafiafia, ma le tau malulu e taugofie.
O paipa uelo fa'afefete okesene: E masani lava, o paipa u'amea la'ititi la'ititi la'ititi, lea e masani ona fa'aaogaina mo le u'amea o le okesene feula.
Uaea casings: O latou o paipa mo fausaga tufatufaina, o paipa uʻamea eletise masani eletise.
O paipa fa'amama manifinifi fa'aeletise: O paipa ia e fa'aaogaina mo meaafale ma lamepa.
Paipa ta'avale: O paipa u'amea eletise eletise i luga o le fusi o le fusi e mana'omia le ovality.
Paipa Transformer: O paipa uamea masani. Fa'aaogā e gaosia ai fa'aalili fa'alili transformer ma isi fa'aliliu vevela.