Pipa fa'avela

uamea autu
20G, 15CrMoG, 12Cr2MoG, 12Cr5MoG, 12Cr9MoG, T11, T22, T5, T22, T9, T91
tulaga tau gaosiga

GB5310《faagaau u'amea lamolemole mo faumea maualuga maualuga》
ASME SA213, fa'au'u u'amea fa'au'u fa'au'u fa'au'au fa'au'au fa'au'au fa'avela, fa'avevela sili ma fa'afesuia'i vevela"