ASTM A520 seamless carbon steel yeeb nkab yog seamless steel yeeb nkab ua raws li cov qauv ASTM A520. Feem ntau yog siv rau kev tsim boilers, cov hlab ntsha siab thiab lwm yam khoom siv siab. ASTM A520 seamless carbon steel yeeb nkab feem ntau yog ua los ntawm cov pa roj carbon steel thiab muaj cov khoom siv zoo thiab cov khoom ua haujlwm, thiab tuaj yeem tiv taus ib puag ncig hnyav xws li kub thiab kub siab.
Yog hais tias boiled steel los yog steels uas tsis yog tua steels yog siv rau fabrication ntawm hluav taws xob kuj welded yeeb nkab raws li qhov yuav tsum tau ntawm Specification A520, lub sawb yuav tsum dov mus rau ib tug dav dav thiab yuav tsum tsis txhob slit longitudinally tshwj tsis yog rau luas cov npoo.
Tus nqi tawm los ntawm lub zog siab ntawm qhov ntsuas kub siab yuav tsum tsis txhob tsawg dua li tus nqi muab. Lub zog tawm los yuav tsum tau txiav txim siab raws li qhov kev hloov pauv mus tas li ntawm {{0}}.2% ntawm qhov ntsuas qhov ntev ntawm cov qauv, lossis rau tag nrho txuas ntxiv ntawm 0.5% ntawm qhov ntsuas qhov ntev hauv qab thauj khoom.
Rau ntau 400 lub raj los yog tsawg dua, txhua 50 lub raj lossis 2% ntawm tag nrho cov raj yuav tsum raug kuaj xyuas tensile, kev sim flattening, thiab flaring lossis flanging kuaj. Rau cov khoom siv ntau tshaj 400 lub raj, ib lub raj ntxiv yuav tsum tau sim rau txhua 100 lub raj lossis ib feem ntawm qhov ntawd.
Qhov kev sim flaring thiab flanging tsuas yog siv rau cov yeeb nkab nrog lub cheeb sab nraud tsis ntau dua 6 ntiv tes (152.4 mm) thiab phab ntsa tuab tsis ntau dua 0.350 nti (8.89 mm).
Ntau ntau yog txhais raws li ib pawg ntawm cov raj ntawm tib txoj kab uas hla thiab phab ntsa tuab, ua los ntawm tib lub ntsuas thiab hlau los ntawm tib lub chaw tsim khoom.
