Ua vaevaeina paipa u'amea i paipa u'amea seamless ma paipa u'amea (paipa seamed).

O le paipa vai o se ituaiga o paipa e leai se mea. Ole auala ole gaosiga e tutusa lava ma le paipa e leai se mea, ae o loʻo iai manaʻoga faʻapitoa i luga o togi uʻamea e faʻaaogaina mo le gaosiga o paipa uʻamea. E tusa ai ma le faʻaaogaina o le vevela, e mafai ona vaevaeina i totonu o faʻafuga faʻalava lautele ma faʻamau faʻapipiʻi maualuga.

1) O togi uʻamea o le maualuga o le carbon structural steel o le 20G, 20MnG ma le 25MnG.

2) Alloy fausaga uamea togi 15MoG, 20MoG, 12CrMoG, 15CrMoG, 12Cr2MoG, 12CrMoVG, 12Cr3MoVSiTiB, ma isi.

Fa'apa'u u'amea e leai se fa'auiga mo fa'uuu omiga maualalo ma feololo (GB3087-2008), Tu'u u'amea e leai se fa'auiga mo fa'afuga maualuga (GB5310-2008), ASME SA-106, ASME SA-213, ASTM A335

E le gata i lea, o loʻo faʻaogaina foi e le matou kamupani paipa uʻamea e leai ni mea mo fausaga (GB/T 81628163), paipa u'amea lamolemole mo le ta'e o le suauu (GB9948), paipa u'amea lamolemole mo fetilaisa maualuga (GB6479), paipa paipa suauu (API 5L) ma paipa pusa suauu (API 5CT), ma mea fa'apipi'i paipa.