ASTM A153 thiab ASTM A123 yog ob qho qauv sib txawv tsim los ntawm American Society for Testing and Materials (ASTM International), feem ntau cuam tshuam nrog cov ntsiab lus ntawm galvanized steel. Cov hauv qab no yog lawv qhov zoo sib xws thiab qhov sib txawv:
Zoo sib xws:
Lub hom phiaj cheeb tsam: Ob leeg koom nrog kub-dip galvanizing, uas koom nrog cov khoom siv hlau hauv molten zinc los tsim cov txheej tiv thaiv zinc.
Qhov txawv:
Muaj feem xyuam:
ASTM A153: Feem ntau yog tsim rau kub-dip galvanizing ntawm me me, bolts, ceev, screws, thiab lwm yam. siv nyob rau hauv ntau yam khoom.
ASTM A123: Feem ntau siv tau rau cov qauv loj lossis ntau qhov tseem ceeb, xws li cov kav dej, fittings, guardrails, steel qauv, thiab lwm yam, nrog rau cov kev cai nruj dua rau lawv cov zinc txheej.
Txheej thickness:
ASTM A153: Feem ntau yuav tsum tau txheej yog nyias thiab feem ntau yog siv rau cov khoom uas tsis tshua muaj kev xav tau rau corrosion kuj.
ASTM A123: Cov kev cai rau txheej txheej feem ntau yog nruj dua, yuav tsum muaj txheej txheej loj dua los muab lub neej ntev dua corrosion.
Kev kuaj xyuas txoj kev:
ASTM A153: Txoj kev sim siv yog qhov yooj yim, feem ntau suav nrog kev tshuaj xyuas qhov muag thiab txheej thickness ntsuas.
ASTM A123: Kev nruj dua, feem ntau suav nrog kev tshuaj xyuas tshuaj, tshuaj xyuas qhov muag, txheej thickness ntsuas, thiab lwm yam.
Daim ntawv thov teb:
ASTM A153: Haum rau qee qhov me me, bolts, txiv ntseej, thiab lwm yam.
ASTM A123: Tsim nyog rau cov qauv loj thiab tseem ceeb dua, xws li cov qauv tsim, txuas hniav, guardrails, thiab lwm yam.
Zuag qhia tag nrho, qhov kev xaiv ntawm tus qauv siv yog nyob ntawm qhov kev thov tshwj xeeb. Yog tias cov qauv loj dua los yog xav tau kev tiv thaiv corrosion ntau dua, kub-dip galvanizing raws li ASTM A123 tus qauv feem ntau yog xaiv.
Post lub sij hawm: Nov-23-2023
