ʻO ka wehewehe pōkole:

ʻO ka paila paila kila nui 20G, 15CrMoG, 12Cr2MoG, 12Cr5MoG, 12Cr9MoG, T11, T22, T5, T22, T9, T91 hana maʻamau GB5310, ʻo ka pahu pahu kiʻekiʻe ʻo ME. SA213 《Seamless ferrite a me austenitic alloy steel tube no ka paila, ka mea wela nui a me ka mea hoʻololi wela》