1. Cov yeeb nkab ASTM A53 lossis A513 puas tuaj yeem siv los ua cov khoom siv ncaj qha rau A500 HSS hauv kev siv cov qauv?
Nws tsis pom zoo. A53 yeeb nkab yog npaj rau kev siv tshuab thiab siab (xws li cov kav dej) thiab muaj qhov ua tau zoo ntawm cov khoom qis (30-35 ksi)-5. A513 yog rau cov tshuab raj uas qhov ntsuas qhov ntev yog qhov tseem ceeb tab sis qhov xav tau ntawm lub zog yog qhov sib txawv thiab tsis tau lees paub tshwj tsis yog tias tau teev tseg-5. Ob leeg tsis tshua muaj txiaj ntsig thiab tus nqi tsim nyog rau kev tsim qauv piv rau A500-5.
2. ASTM A500 piv rau cov qauv thoob ntiaj teb li cas?
Hauv Teb Chaws Asmeskas, A500 yog tus qauv uas tau teev tseg rau HSS-2. Hauv Canada, tus qauv nruj dua CSA G40.21 feem ntau nyiam dua-2. Hauv Tebchaws Europe, qhov sib npaug sib npaug yog txias-tsim tubing rau EN 10219-1, xws li qib S355J2H, uas suav nrog kev lees paub qhov tseem ceeb ntawm qhov tsis zoo-6.
3. Dab tsi yog qhov tseem ceeb ntawm kev txiav txim siab ntev rau A500?
Rau A500, phab ntsa thickness kam rau ua yog -10% ntawm nominal. Yog li ntawd, tsim cov lej zoo li AISC 360 xav tau qhov "tsim thickness" txo qis; Kev suav feem ntau yog raws li 0.93 npaug ntawm nominal thickness-5. Lub kaum sab xis ntawm lub kaum sab xis rau cov square / duab plaub kuj cuam tshuam rau kev suav cov khoom seem-5.
4. Yuav tsum kuaj dab tsi rau A500 tubing?
Cov lus qhia tshwj xeeb yuav tsum muaj kev ntsuam xyuas nruj thiab kev ntsuam xyuas flattening yuav tsum tau ua ntawm cov qauv kom ua raws li cov cuab yeej cuab tam-7. Cov tshuaj muaj pes tsawg leeg yuav tsum muaj rau cov ntsiab lus xws li carbon, manganese, phosphorus, sulfur, thiab tooj liab yuav tsum tau ntsib-7.
5. Puas yog ASTM A500 yog tus qauv thoob ntiaj teb lees paub thiab tam sim no?
Yog lawm. ASTM A500 / A500M yog tus qauv nquag thiab thoob ntiaj teb lees paub. Cov ntawv tshaj tawm tshiab thaum lub sijhawm sau ntawv no yog los ntawm 2023-3, thiab nws tau txais los ntawm lwm lub koom haum, xws li Gulf Standardization Organization (GSO) hauv 2024-7.
