ASTM A53tus qauv yog American Society for Testing and Materials. Tus txheej txheem npog ntau qhov ntau thiab tsawg thiab tuab thiab siv rau cov kav dej siv los thauj cov pa roj, kua thiab lwm yam dej. ASTM A53 tus qauv piping feem ntau yog siv rau hauv kev lag luam thiab tshuab, nrog rau hauv kev tsim kho kev lag luam rau dej, cua sov thiab cua txias tshuab.

Raws liASTM A53tus qauv, cov kav dej tuaj yeem muab faib ua ob hom: Hom F thiab Hom E. Hom F yog seamless yeeb nkab thiab hom E yog hluav taws xob welded yeeb nkab. Ob hom kav dej xav tau kev kho cua sov kom ntseeg tau tias lawv cov khoom siv kho tshuab thiab cov tshuaj muaj pes tsawg leeg ua tau raws li cov qauv kev cai. Tsis tas li ntawd, cov kev cai saum npoo ntawm cov yeeb nkab yuav tsum ua raws li cov kev cai ntawm ASTM A530 / A530M tus qauv los xyuas kom meej nws cov tsos zoo.

Cov ntsiab lus tshuaj muaj pes tsawg leeg ntawm ASTM A53 tus qauv kav yog raws li hauv qab no: cov ntsiab lus carbon tsis tshaj 0.30%, manganese cov ntsiab lus tsis tshaj 1.20%, phosphorus ntsiab lus tsis tshaj 0.05%, sulfur ntsiab lus tsis tshaj 0.045%, chromium cov ntsiab lus tsis tshaj. 0.40%, thiab cov ntsiab lus nickel tsis tshaj 0.40%, cov ntsiab lus tooj liab tsis tshaj 0.40%. Cov tshuaj lom neeg muaj pes tsawg leeg txwv kom muaj zog, toughness thiab corrosion kuj ntawm cov kav dej.

Hais txog cov khoom siv kho tshuab, ASTM A53 tus qauv xav kom lub zog tensile thiab lub zog ntawm cov kav dej tsis muaj tsawg dua 330MPa thiab 205MPa feem. Tsis tas li ntawd, qhov elongation tus nqi ntawm cov yeeb nkab kuj tseem muaj qee qhov kev xav tau los xyuas kom meej tias nws tsis tuaj yeem tawg lossis deformation thaum siv.

Ntxiv rau cov tshuaj muaj pes tsawg leeg thiab cov khoom siv kho tshuab, ASTM A53 tus qauv kuj tseem muab cov kev cai ntxaws ntxaws ntawm qhov loj thiab qhov zoo ntawm cov kav dej. Cov yeeb nkab loj li ntawm 1/8 nti mus rau 26 ntiv tes, nrog rau ntau hom phab ntsa thickness xaiv. Qhov zoo ntawm cov raj xa dej yuav tsum muaj qhov chaw du yam tsis muaj qhov pom tseeb oxidation, tawg thiab tsis xws luag los xyuas kom meej tias nws yuav tsis xau lossis puas thaum lub sijhawm teeb tsa thiab siv.

Feem ntau, ASTM A53 tus qauv yog tus qauv tseem ceeb rau cov pa roj carbon steel kav. Nws npog cov kev cai rau cov tshuaj muaj pes tsawg leeg, txhua yam khoom, qhov ntev thiab qhov zoo ntawm cov kav dej. Cov kav dej ua raws li tus qauv no tuaj yeem ua kom ruaj khov thiab txhim khu kev qha, thiab tsim nyog rau cov kav dej hauv ntau yam kev lag luam thiab kev tsim kho. Kev tsim thiab kev siv ntawm ASTM A53 cov qauv yog qhov tseem ceeb rau kev ua kom muaj kev nyab xeeb ntawm cov kav dej thiab txhawb kev tsim kho qhov project zoo.