Uamea uamea o paipa fa'apipi'i 'au
O se auala e fa'aogaina ai le fa'aogaina o masini e fa'aoga ai le mamafa i pa'u u'amea, ma mafua ai ona latou fa'aleagaina, ina ia mafai ai ona maua ni mea fa'ainisinia, foliga, ma le tele.
E ala i le faʻaauauina o le tuʻiina o paipa, o le vaeluaga o loʻo iai, porosity, porosity, slag inclusion, ma isi mea i totonu o le uamea ua faʻapipiʻiina ma faʻapipiʻiina, e maua ai se microstructure sili atu ma faʻaleleia le palasitika ma mea faʻainisinia o le uamea.
O mea fa'apipi'i fa'apipi'i e masani lava ona aofia ai fa'aitiitiga fa'amau fa'ameamea, ofe fa'a, ma isi.
O mea autu o paipa faʻapipiʻiina e aofia ai A105,40Cr,12Cr1MoV,30CrMo,15CrMo, ma isi.
E tutusa lelei ma paipa faʻapipiʻi, o mea faʻainisinia o faʻamea e maualalo ifo nai lo mea faʻapipiʻi o mea tutusa.
O mea fa'apipi'i paipa fa'afefeteina uamea i totonu o se vai e fetaui ma mea e mana'omia ma sasaa i totonu o le fa'ameamea. A maeʻa le faʻamafanafanaina, faʻamalosia, ma le faʻamamaina o togafitiga, o le faagasologa o le mauaina o faʻailoga (vaega poʻo avanoa) faʻatasi ai ma foliga, lapoa, ma faʻatinoga.