Kayayyakin ƙarfe na Amurka suna da ƙarin ma'auni, galibi a cikin nau'ikan masu zuwa:

ANSI– Matsayin Ƙasar Amurka

AISI–Ƙungiyoyin Ƙarfe da Ƙarfe na Amirka

ASTM-Ƙungiyar Gwaji da Kayayyakin Amirka

ASME-Ƙungiyar Injin Injiniya ta Amurka

AMS- Bayani dalla-dalla na Aerospace (ɗaya daga cikin ƙayyadaddun ƙayyadaddun kayan da aka fi amfani da su a cikin masana'antar jirgin sama ta Amurka, wanda SAE ta haɓaka)

API–Ka’idojin Cibiyar Man Fetur ta Amurka

AWS– Standardungiyar Walda ta Amurka

SAE–Ƙungiyar Injiniyoyin Motoci ta Amirka

MIL– Matsayin sojan Amurka

Qq–Ka’idojin gwamnatin tarayya na Amurka

API–Ka’idojin Cibiyar Man Fetur ta Amurka

ANSI– Matsayin Ƙasar Amurka

ASME-Ƙungiyar Injin Injiniya ta Amurka

ASTM-Ƙungiyar Gwaji da Kayayyakin Amirka

Waɗannan ƙa'idodi, duk sun kasance na ƙa'idodin ƙarfe na Amurka, kamar ASME a cikin kayan da ƙa'idodin ke amfani da su daga ASTM ne, bawul ɗin da ke cikin daidaitaccen ma'aunin API, da madaidaitan bututun ƙarfe daga ma'aunin ANSI.Bambance-bambance ya ta'allaka ne a cikin mayar da hankali daban-daban na masana'antu, don haka ɗaukar matakan daban-daban.API, ASTM, ASME membobi ne na ANSI.Ma'auni na Cibiyar Matsayin Ƙasa ta Amirka, mafi rinjaye daga ƙa'idodin ƙwararru.A gefe guda, ƙungiyoyin ƙwararru, ƙungiyoyi, ƙungiyoyi kuma za su iya kasancewa bisa ƙa'idodin ƙasa da ake da su don haɓaka wasu samfuran samfuran.Hakika, ba zai iya bi na kasa misali don bunkasa nasu ƙungiyoyi matsayin.Matsayin ANSI na son rai ne.{Asar Amirka ta yi imanin cewa ƙa'idodi na tilas na iya iyakance abubuwan da ake samu.Amma ta doka da ma'aikatun gwamnati don haɓaka ƙa'idodi, gabaɗaya ma'auni na wajibi.