ERW paipa tulagae fa'apea:
API 5L, ASTM A53 B, ASTM A178, ASTM A500/501, ASTM A691, ASTM A252, ASTM A672

API 5L Standard faʻamoemoe i le kesi ma le vai i totonu o le suauu ma le gaosiga o le kesi mo faʻamatalaga, lea e faʻaaogaina mo paipa uʻamea faʻafefe ma paipa uʻamea uʻamea, e aofia ai le taulaga masani ma le taulaga, o le paipa o le paipa ma le faʻafefe saʻo (TFL) ma le taulaga mo se faʻapitoa. fa'aogaina o paipa feso'ota'iga.

ASTM A53 paipa ua faʻamoemoe mo masini ma faʻaoga faʻamalosi ma e talia foi mo faʻaoga masani ile ausa, vai, kesi ma laina ea.

ASTM A178 fa'ata'ita'iga mo paipa fa'afefe-eletise fa'atasi ma le mafiafia aupito maualalo o puipui e faia i le sila carbon ma le carbon-manganese u'amea e fa'aoga i fa'aapa fa'afu, fa'afu fa'auna, fa'avevela vevela, ma pito saogalemu.

ASTM A500 o lo'o fa'apipi'iina le fa'a'au'au fa'apipi'i fa'amalulu ma le fa'aogaina o le uamea kaponi lapotopoto, sikuea, fa'afa'afa'afa, po'o fa'apitoa foliga fa'apipi'i fa'apipi'i mo le fa'aogaina o alalaupapa ma fale, ma mo fa'amoemoega lautele.

ASTM A691 e aofia ai le kaponi ma le paipa uamea, faʻafefiloi-eletise faʻatasi ma faʻapipiʻi uʻamea faʻapipiʻi, faʻapipiʻiina mai le ipu omiga-lelei ipu o le tele o suʻesuʻega ma tulaga malosi ma talafeagai mo auaunaga maualuga-omiga i le vevela maualuga.

ASTM A252 e aofia ai fa'aputu u'amea u'amea puipui fa'aigoa o lo'o galue ai le pa'u u'amea o se vaega tumau e amoina uta po'o se atigi e fausia ai fa'aputu sima.

ASTM A672 e ufiufi le paipa u'amea fa'aeletise-fusi-uelo mo le 'au'aunaga maualuga i le vevela.