Zogulitsa zachitsulo zaku US zili ndi miyezo yambiri, makamaka m'magulu otsatirawa:

ANSI- American National Standard

AISI-American Society of Iron ndi Steel Standards

Chithunzi cha ASTM-American Society for Testing and Equipment

ASME- American Society of Mechanical Engineers

AMS-Mafotokozedwe azinthu zamlengalenga (chimodzi mwazinthu zomwe zimagwiritsidwa ntchito kwambiri pamakampani oyendetsa ndege aku US, opangidwa ndi SAE)

API-Miyezo ya American Petroleum Institute

AWS- American Welding Association Standard

SAE- American Society of Automotive Engineers Standards

MIL- Miyezo yankhondo yaku US

Qq- Miyezo ya boma la US

API-Miyezo ya American Petroleum Institute

ANSI- American National Standard

ASME- American Society of Mechanical Engineers

Chithunzi cha ASTM-American Society for Testing and Equipment

Miyezo iyi, yonse ndi ya zitsulo za US, monga ASME muzinthu zomwe zimagwiritsidwa ntchito ndi miyezo zimachokera ku ASTM, valavu mu API yodziwika bwino, ndi zitsulo zochepetsetsa zazitsulo zochokera ku ANSI.Kusiyana kwagona pa cholinga chosiyana cha mafakitale, kotero kukhazikitsidwa kwa miyezo yosiyana.API, ASTM, ASME ndi mamembala a ANSI.Miyezo ya American National Standards Institute, ochuluka kwambiri kuchokera pamiyezo yaukadaulo.Kumbali inayi, mayanjano a akatswiri, mayanjano, magulu amathanso kukhazikitsidwa pamiyezo yadziko yomwe ilipo kuti akhazikitse zinthu zina.Kumene, sangatsatire mulingo wa dziko kukulitsa mayanjano awo.Miyezo ya ANSI ndi yodzifunira.United States imakhulupirira kuti miyezo yovomerezeka imatha kuchepetsa zokolola.Koma ndi lamulo ndi m'madipatimenti boma kukhazikitsa miyezo, zambiri movomerezeka muyezo.