covASTM cov qauv khoom siv yog tsim los ntawm American Society for Materials and Testing, ASTM cov qauv ntaub ntawv tuaj yeem suav nrog cov khoom siv tshuaj, txhua yam, lub cev thiab hluav taws xob ntawm cov khoom.Cov qauv no suav nrog ob qho kev piav qhia ntawm cov qauv kev sim uas yuav tsum tau ua ntawm cov khoom siv hauv tsev, thiab qhov loj thiab cov duab uas cov ntaub ntawv no yuav tsum tau ua.Cov khoom siv hauv tsev xws li pob zeb tuaj yeem xav tau los ntawm txoj cai lij choj hauv zos kom ua tau raws li ASTM cov qauv ua ntej siv hauv kev tsim kho.Raws li ASTM A53(structural steel yeeb nkab)thiab ASTM A106 tau dav siv.

ASME yog tus qauv ntawm American Society of Mechanical Engineers.ASME cov ntaub ntawv tshwj xeeb yog raws li cov ntawv luam tawm los ntawm ASTM, AWS thiab lwm yam kev lees paub hauv tebchaws thiab thoob ntiaj teb cov qauv.ASME cov qauv yuav tsum raug cai thaum tsim kev tsim kho vaj tse xws li txuas hniav, fais fab kav kav dej thiab boilers.Ntawm ASME b16.5 tau siv dav.

ASTM yog lub luag haujlwm rau kev txhim kho thiab rov tsim cov qauv rau txhua yam khoom qub thiab tshiab.Vim nws yog qhov kev xeem thiab cov khoom sib koom ua ke.

ASME yog xaiv los nqus thiab lim cov qauv no rau cov haujlwm tsim nyog siv, thiab hloov kho kom txhim kho.

ASTM yog US cov qauv khoom, zoo ib yam li GB713

ASME yog tus qauv tsim, tab sis ASME yog qhov ua tiav.