ʻO nā huahana kila US me nā kūlana ʻē aʻe, ka mea nui ma nā ʻāpana aʻe:

ANSI– ʻAmelika Hui Pū ʻIa

AISI– ʻAmelika Hui Pū ʻIa o ka hao a me ke kila

ASTM–Ahui ʻAmelika no ka hoʻāʻo ʻana a me nā lako

ASME– ʻAhahui ʻAmelika o nā ʻEnekinia Mechanical

AMS- Nā kikoʻī kikoʻī aerospace (kekahi o nā mea kikoʻī maʻamau i hoʻohana ʻia i ka ʻoihana mokulele US, hoʻomohala ʻia e SAE)

API– Nā kūlana o ka American Petroleum Institute

AWS– ʻAhahui Welding Standard ʻAmelika

SAE– Nā Kūlana ʻAmelika Hui Pū ʻIa o nā ʻEnekinia Automotive

MIL– Nā kūlana koa US

Qq– Nā kūlana aupuni federala US

API– Nā kūlana o ka American Petroleum Institute

ANSI– ʻAmelika Hui Pū ʻIa

ASME– ʻAhahui ʻAmelika o nā ʻEnekinia Mechanical

ASTM–Ahui ʻAmelika no ka hoʻāʻo ʻana a me nā lako

ʻO kēia mau kūlana, aia nā mea a pau i nā kūlana kila US, e like me ASME i nā mea i hoʻohanaʻia e nā kūlana mai ka ASTM, ka valve i ka API kuhikuhi maʻamau, a me nā paipu paipu maʻalahi mai ka maʻamau ANSI.Aia ka ʻokoʻa i ka manaʻo like ʻole o ka ʻoihana, no laila ka hoʻokomo ʻana i nā kūlana like ʻole.ʻO API, ASTM, ASME nā lālā o ANSI.Nā kūlana o ka American National Standards Institute, ka hapa nui loa mai nā kūlana ʻoihana.Ma ka ʻaoʻao ʻē aʻe, hiki ke hoʻokumu ʻia nā hui ʻoihana, nā hui, nā pūʻulu i nā kūlana aupuni e hoʻomohala i kekahi mau kūlana huahana.ʻOiaʻiʻo, ʻaʻole hiki ke hahai i ke kūlana aupuni e hoʻomohala i kā lākou mau kūlana hui.ʻO nā kūlana ANSI he manawaleʻa.Ke manaʻoʻiʻo nei ʻo ʻAmelika Hui Pū ʻIa e hiki ke kaupalena ʻia ka loaʻa ʻana o ka huahana.Akā ma ke kānāwai a me nā keʻena aupuni e hoʻomohala i nā maʻamau, ma ke ʻano he maʻamau koi.