O le pili o loʻo faʻaaogaina i le gaosiga o paipa uʻamea e taʻua o le tube billet. E masani lava ona fa'aogaina le u'amea lapotopoto malosi maualuga (po'o le u'amea). E tusa ai ma auala eseese o le gaosiga, ua i ai pileti faʻamaufaʻailoga le faia o ingots uʻamea, lafo pea billets, forging billets, taʻavale billets ma centrifugally lafo billets omo. e taua tele le pili o le paipa.

I se tulaga lautele, o le paipa avanoa e faasino i se paʻu paʻu lapotopoto. O le lapo'a o le pa'u paipa lapotopoto o lo'o fa'atusalia e le lautele o le sila'a lapotopoto malo. Tube billet sauniuni e aofia ai le filifilia o le paipa faʻataʻitaʻiga faʻataʻitaʻiga ma faʻamatalaga, vailaʻau vailaʻau ma suʻesuʻega fausaga, suʻesuʻega faʻaletonu ma faʻamamaina, tipiina, faʻatotonugalemu, ma isi.
Fa'agasologa ole gaosiga ole paipa fa'aaumea seamless e fa'apea:

Umea – U’amea – Uamea Tatala Tatala (po’o Uamea U’amu Fa’aeletise ma U’amea Fa’asuia o le Okesene) – Ingot – Billeting – Ta’avale Ta’amilosaga Pa – Piila Fa’aulaula.

A) Fa'avasegaina o fa'alava fa'alava uamea seamless

E mafai ona fa'avasegaina le pa'u u'amea u'amea e fa'atatau i le faiga fa'agaioiga, vaila'au vaila'au, faiga fa'avae, tulaga fa'aoga, ma isi o le fa'alava uamea.
Mo se faʻataʻitaʻiga, e tusa ai ma le auala togafitiga, e mafai ona vaevaeina i totonu o le ogaumu eletise paipa paipa paipa, converter paipa paipa paipa ma electroslag paipa paipa pili; e tusa ai ma le faiga o le faiga, e mafai ona vaevaeina i totonu uamea ingot, fa'aauau le lafo paipa pili, fa'ailoga paipa paipa, ta'avale paipa pili ma centrifugal lafo o'o tube. E tusa ai ma le tuufaatasiga o vailaʻau, e mafai ona vaevaeina i le kaponi uamea paipa paipa, uʻamea uʻamea pili paipa, uamea stainless paipa paipa ma corrosion-tetee alumea pili paipa; viliina ma vili fa'afanua pili fa'apalapala, pili fa'afugala'au la'au fetilaisa, pili fa'alava fa'alava, ma isi fa'amoemoega fa'apitoa pili.

B) Filifiliga o pili uamea paipa seamless

O le filifilia o paʻu paʻu uʻamea seamless e aofia ai le filifilia o togi uʻamea, faʻamatalaga, auala faʻafefeteina ma auala faʻavae.
Filifili togi uʻamea, faiga faʻagaioiga ma faiga faʻavae e tusa ai ma tulaga faʻatau oloa poʻo faʻatonu tulaga faʻapitoa. Ole filifiliga ole lapopoa ole lapo'a e fa'avae ile su'eina ole lapo'a tutusa ile laulau ta'avale e tusa ai ma le tele ole paipa u'amea.

E masani lava, e fa'aogaina e fale gaosi paipa u'amea fa'amama uamea fa'aliliu po'o le ogaumu fa'aeletise mo le fa'aauauina o le fa'asoloina o piliti lapotopoto.
Afai e le mafai ona faʻaauau le lafo o le uamea poʻo le faʻamatalaga, o le uʻamea uʻamea poʻo le tuʻuina atu o le centrifugal e faia i totonu o se paʻu lapotopoto omo. Afai e le mafai e le tele o le paʻu paʻu ona fetaui ma manaʻoga o le fua faʻapipiʻi, e mafai ona filifilia se avanoa faʻapipiʻi lapoa ma taʻavale pe faʻapipiʻi e avea ma avanoa avanoa e fetaui ma manaʻoga tetele. O le fua fa'atatau o le fua fa'amalosi e fa'apea: K=F, 1F lea o le K o le fua fa'amalosi; F——le vaega faalava o le paipa avanoa, mm; F——le vaega faalava o le paipa uamea, mm.

Pe a iai ni manaʻoga faʻapitoa i le tutusa o le tuʻufaʻatasiga tuʻufaʻatasiga tuʻufaʻatasia, aofia ai mea e aofia ai poʻo le kesi anotusi, o le faʻafefe faʻafefeteina e le electroslag poʻo le ogaumu faʻavevelaina vacuum e masani ona faʻaaogaina.