Zvigadzirwa zvesimbi zveUS zvine mamwe mazinga, kunyanya muzvikamu zvinotevera:

ANSI-American National Standard

AISI-American Society of Iron uye Steel Standards

ASTM-American Sosaiti Yekuyedza uye Zvishandiso

ASME-American Society yeMechanical Engineers

AMS-Aerospace zvinhu zvakatemwa (imwe yeanonyanya kushandiswa zvinhu zvinotsanangurwa muUS avhiyesheni indasitiri, yakagadziridzwa neSAE)

API-American Petroleum Institute zviyero

AWS-American Welding Association Standard

SAE-American Society of Automotive Engineers Standards

MIL-US miitiro yemauto

Qq- US federal hurumende zviyero

API-American Petroleum Institute zviyero

ANSI-American National Standard

ASME-American Society yeMechanical Engineers

ASTM-American Sosaiti Yekuyedza uye Zvishandiso

Iyi miyero, yese ndeye US simbi zviyero, senge ASME muzvinhu zvinoshandiswa nezviyero zvinobva kuASTM, vharafu muyakajairwa referensi API, uye zvinyoro simbi pombi fittings kubva kuANSI standard.Musiyano uri mukutarisisa kwakasiyana kweindasitiri, saka kutorwa kwemazinga akasiyana.API, ASTM, ASME inhengo dzeANSI.American National Standards Institute zviyero, ruzhinji kubva kuhunyanzvi zviyero.Nekune rimwe divi, masangano ehunyanzvi, masangano, mapoka anogona zvakare kuve akavakirwa pane iripo yenyika zviyero kugadzira mamwe zvigadzirwa zviyero.Ehe, haigone kutevedzera chiyero chenyika kukudziridza yavo yekudyidzana mipimo.ANSI zviyero ndezvekuzvidira.IUnited States inotenda kuti zviyero zvinosungirwa zvinogona kudzikisira kuwanikwa kwekubudirira.Asi nemutemo nemadhipatimendi ehurumende kuvandudza zviyero, kazhinji chiyero chinosungirwa.