** 1. Dab tsi yog astm yeeb nkab qib? **
ASTM cov xaim xaim cov qhab nia xa mus rau cov kev faib tawm hauv Asmeskas yog cov khoom siv tshuaj ntsuam, cov khoom siv neeg ua haujlwm, tsim cov txheej txheem, thiab cov ntawv thov cov kav dej. Piv txwv li:
- ** ASTM A106 **: Seamless cov pipes steel kav rau kev pab kub siab.
- ** ASTM A53 **: Welded thiab Seamless Steel Kav rau kev siv dav dav.
- ** AVEM A312 **: Cov kav hlau hlau stainless hlau rau kev xeb lossis qhov chaw kub kub.
Txhua qib ua kom ua tiav kev ua tau zoo sib xws rau kev siv kev lag luam tshwj xeeb (piv txwv li roj \/ roj, tsim kho cov nroj tsuag, tshuaj lom neeg).
** 2. Dab tsi yog qhov sib txawv ntawm ASTM thiab ASME YEEB NKAB? **
- ** ASTM ** tsom rau cov khoom siv tshwj xeeb (piv txwv li, kev siv chemistry, lub zog, kev tsim qauv). Cov kav dej sau npe "ASTM" ua raws cov qauv no.
- ** ASME ** (AMERICOY SCRISH ntawm cov neeg kho tshuab tshuab Piv txwv li, ASME B36.10M npog cov yeeb nkab loj, thaum asme boiler thiab siab lub nkoj boiler thiab siab rau kev nyab xeeb thiab kev sim cov qauv.
- ** ALTE qhov sib txawv **: ASTM qhia meej * Dab tsi * cov yeeb nkab yog ua los ntawm, thaum asme dictates * li cas * nws yuav tsum siv nyob rau hauv cov kab ke. ASME feem ntau hais txog Astm cov ntaub ntawv tab sis ntxiv cov kev xav tau engineering.
** 3. Qib astm qib txhais tau li cas? **
Ib qib ATM yog cov qauv qhia kev faib tawm cov ntaub ntawv ua raws li cov qauv ATM tshwj xeeb. Nws txhais:
- Tshuaj lom neeg tshuaj lom neeg (piv txwv li, cov pa roj carbon, chromium cov ntsiab lus).
- Cov cuab yeej ua lwm yam (xws li, lub zog tensile, tawm los lub zog).
- Cov txheej txheem tsim khoom (xws li, seamless, welded, kev kho cua sov).
- Kev tshuaj ntsuam cov txujci (piv txwv li, kev xeem hydrostatic, tsis muaj kev puas tsuaj).
Cov qib (piv txwv li, gr. B in ttm A106) Pab cov neeg siv xaiv cov khoom siv rau lawv cov haujlwm ua haujlwm (piv txwv li cov kev mob siab, corrosion tsis kam).
** 4. Dab tsi yog astm txhais tau li cas hauv steel? **
Hauv cov hlau, ovm txhais tau ua raws li cov qauv txheej txheem los ntawm Astm International. Cov qauv no kom haum rau cov kev sib luag hauv kev ua tau zoo, ua tau zoo, thiab kev nyab xeeb. Piv txwv li:
- ** SHTM A36 **: Cov Hlau Pauv Hlau Rau Cov Vaj Tse thiab Txuas hniav.
- ** ASTM A516 **: Cov phiaj hlau rau cov hlab ntsha siab.
Txhua tus txheem qhia tawm cov tshuaj lom neeg muaj cov tshuaj uas tau pom zoo, cov kws kho mob tshuab, thiab kev sim cov qauv, ua kom cov enteriaters kom ntseeg tau cov ntaub ntawv uas pom zoo.
** 5. Dab tsi yog astm txheem code? **
Ib ASTM Txujci Qauv yog tus cim alphanumeric rau cov ntaub ntawv tshwj xeeb lossis kev sim. Cov hom ntawv suav nrog:
- Ib tsab ntawv ua ntej denoting cov ntaub ntawv pawg (piv txwv li, ** rau ferrous hlau, ** b ** rau tsis yog-ferrous).
- Tus lej sib npaug (piv txwv li, ** A106 ** rau cov yeeb nkab carbon hlau).
- Xaiv cov lus yaib zoo li "gr." (qib) lossis mob (piv txwv li, "H" rau kev pabcuam kub-).
Piv txwv li: ** Astm A106 Gr. B ** yog hais txog carbon steel yeeb nkab qib nrog txhais cov chemistry thiab tensile lub zog. Cov qauv tseem yuav suav nrog ib xyoos (piv txwv li, ASTM A106 \/ A106M {3}}) txhawm rau qhia txog kev kho lus version.
