** 1. Dab tsi yog ASTM A500 Qib C spec? **
ASTM A500 yog tus qauv tshwj xeeb rau cov khaub thuas- tsim cov hlau ua kom zoo nkauj thiab cov khoom siv sib dhos hauv nruab nrab, square, thiab duab dhos ua si. Qib C yog ib qho ntawm lub zog yog cov qib hauv txoj kev tshwj xeeb no. Cov tseev kom tseem ceeb rau A500 qib C yog:
* ** Thaum Yam Tsawg Cim Lub Zog: ** 50 KSI (345 MPA)
* ** Tsawg Yam Tsawg Npaum Lub Zog: ** 62 KSI (427 MPA)
Nws yog feem ntau siv nyob rau hauv cov ntawv thov cov txheej txheem rau cov vaj tse, txuas hniav, thiab lwm yam kev tsim kho qhov twg siab- qhov hnyav ratio yog qhov tseem ceeb.
** 2. Dab tsi yog qhov sib txawv ntawm ASTM A500 qib B thiab C? **
Qhov sib txawv ntawm Astm A500 qib B thiab qib C yog lawv li ** lub zog **.
* ** QIB B ** muaj qhov tsawg kawg nkaus lub zog ntawm 46 ksi (317 MPa) thiab qhov tsawg kawg nkaus tensile lub zog ntawm 58 ksi (400 mpa).
* ** QIB C ** muaj zog dua, muaj tsawg kawg nkaus, 345 MPa) thiab lub zog yam tsawg kawg nkaus ntawm 62 KSI (427 MPA).
Qib B yog tus muaj feem ntau thiab dav muaj kawm muaj rau cov hom phiaj tsim dav hlau. Qib C yog teev nyob qhov twg siab dua lub zog yog yuav tsum tau txo phaus lossis coj cov khoom loj dua, feem ntau nyob rau hauv cov ntawv thov loj dua.
** 3. Dab tsi yog ASTM rau C channel? **
Tsis muaj ib qho tib neeg ASTM tus qauv tshwj xeeb rau "C channel." Tus qauv siv nyob ntawm seb cov channel yog dab tsi ua thiab nws cov tshuaj lom neeg muaj pes tsawg leeg.
* **ASTM A36:** This is the most common standard for rolled carbon steel structural shapes, including C channels (also called channel beams or C-sections). Nws npog ob qho kub - rolled thiab steel bar puab.
* ** ASTM A992: ** Qhov no yog tus qauv uas nyiam tshaj plaws rau ** kub} rolled vajraces jims} ci ci) tab sis feem ntau yog siv rau cov qauv C raws. Rau cov channel, A36 tseem yog thawj qhov tshwj xeeb thawj.
* ** ASTM A500: ** Yog tias ib qho c {1} Tus tswv cuab cov qauv siv los ntawm cov khoom siv ua ke rau astm A500 (rau kev tubing) lossis lwm cov phaj specifications.
** 4. Dab tsi yog astm qib C? **
"ASTM qib C" tsis yog ua tiav lossis kev tsim tshwj xeeb ntawm nws tus kheej. Lo lus "qib C" yuav tsum tau siv ua ke nrog cov lej ASTM cov qauv, vim nws yog hais txog qib tshwj xeeb hauv tus qauv ntawd. Piv txwv li:
* Hauv ** ASTM A53 ** (Yeeb Nkab), qib C muaj lub zog siab dua qib B.
* Hauv ** ASTM A500 ** (QIB TUBING), qib C muaj lub zog siab dua qib B.
* Hauv ** AVTM A36 ** (cov qauv hlau qauv), nws tsis muaj qib C; Nws yog ib qho kev qhia qib ib.
Yog li, koj yuav tsum ib txwm xa mus rau tag nrho ASTM Txuj (piv txwv li, A500 Qib C) rau lo lus yuav muaj txiaj ntsig.
** 5. Dab tsi yog ASTM rau cov hlau txias? **
Muaj ob peb tus tseem ceeb ASTM cov qauv uas npog txias - rolled steel, nyob ntawm nws cov kev xav siv:
* ** ASTM A1008: ** Nov yog tus qauv tshaj plaws rau ** -}} ntaub tawv wab roj carbon steel, qauv zoo nkauj ". Nws tau npog ntau yam ntawm lub zog kawm thiab tsim nyog siv hauv cov ntawv thov los ntawm cov khoom siv rau cov khoom lag luam hauv tsheb.
* ** ASTM A366: ** Tus qauv no npog ** txias {{1} {rolled carbon steel ntawv, ua lag luam zoo **. Nws feem ntau yog siv rau kev siv cov ntawv thov tsawg dua A1008.
* ** AVTM A611: ** Tus qauv no tshwj xeeb rau ** txias {{1} {rolled carbon steel qauv ntawv **, siv rau kev siv cov khoom siv thiab kev kho vaj tsev.
