O paipa u'amea fa'afefe mo fa'avela o se ituaiga o paipa fa'avela ma e aofia i le vaega o paipa u'amea.Ole auala ole gaosiga e tutusa ma paipa u'amea e leai ni mea, ae o lo'o i ai manaoga fa'apitoa mo le ituaiga u'amea fa'aaogaina i le gaosiga o paipa u'amea.O paipa uʻamea e leai ni faʻaoga mo faʻavela e masani ona faʻaaogaina i lalo ole vevela maualuga ma tulaga maualuga.I lalo o le gaioiga o le maualuga o le vevela o le kasa ma le ausa vai, o paipa o le a oxidize ma corrode.O paipa uʻamea e manaʻomia e maua ai le malosi tumau maualuga, maualuga le tetee i le faʻamaʻiina ma le pala, ma le mautu lelei.O paipa u'amea lamolemole mo fa'avela e masani ona fa'aaogaina e fai ai paipa maualuga, paipa ausa autu, ma isi.

Fa'apa'au fa'afuga maualalo ma feololoGB3087 mafa'alava fa'alavaGB5310 o mea e sili ona lelei o loʻo faʻaaogaina e gaosia ai paipa ausa, paipa vai faʻafefe mo faʻafuga maualalo o fausaga eseese, paipa ausa faʻafefete mo locomotive boilers, paipa asu tetele, paipa asu laiti ma paipa piliki.u'amea faufale uamea vevela ma toso malulu (ta'avale) paipa u'amea lamolemole.Paipa u'amea fa'a'au'a'a (GB/T8162)o se paipa u'amea seamless fa'aaogaina mo fausaga lautele ma fausaga masini.O paipa fa'avevela maualuga ASME SA-106 (GR.B, GR.C)maASTM A210o lo'o fa'aaogaina mo paipa fa'avevela ma fa'aa'au fa'afu.Fa'apa'au, e aofia ai fa'alava fa'au'u saogalemu ma fa'alava fa'alava ma fa'alava fa'alava la'ititi le mafiafia o puipui e leai ni fa'auiga fa'alava mo fa'alava fa'avevela,ASME SA-213, ferritic ma austenitic seamless mo boilers, superheaters ma fesuiaiga vevela paipa u'amea,ASTM A335 P5, P9, P11, P12, P22, P9, P91, P92, ferritic alloy seamless paipa uamea mo le vevela maualuga.

Faʻamatalaga ma foliga lelei: GB5310-2017 "Seamless Steel Pipe for High-Pressure Boilers" O le pito i fafo o paipa vevela e 22 i le 530mm, ma le mafiafia o le puipui e mai le 20 i le 70mm.O le lautele pito i fafo o paipa malulu (cold-rolled) e amata mai i le 10 i le 108mm, ma le mafiafia o le puipui mai le 2.0 i le 13.0mm.

O paipa e leai ni mea mo fa'avela e fa'aaogaina togi u'amea

(1) Fa'ailoga uamea faufale maualuga maualuga e aofia ai le 20G, 20MnG, ma le 25MnG.

(2) Fa'ailoga uamea fa'apipi'i15MoG, 20MoG, 12CrMoG,15CrMoG, 12Cr2MoG, 12CrMoVG, ma isi.