1. ** Dab tsi yog ATM A36 hlau siv rau? **
ASTM A36 cov hlau feem ntau yog siv rau ** xws li cov tsev, kev tsim kho, thiab tshuab kev tsim kho, thiab cov tshuab ua kom zoo, weldability, thiab muaj peev xwm ntawm tus nqi qis.
2. ** Dab tsi yog ASTM C131 sib npaug rau Aashto? **
ASTM C131 ("Tsis kam rau kev ua phem ntawm me me-loj co-loj cohes los ntawm kev puas tsuaj thiab cuam tshuam rau Aashto T 96 **. Ob qhov qauv piav qhia tib yam Los Angeles (LA) kab ntsuas kev sim rau cov me me sib sau ua ke.
3. ** Dab tsi yog astm A786 specification tshwj xeeb? **
ASTM A786 / A786M npog ** steel lawj nrog embossed qauv ** Siv feem ntau li ** hauv cov tuam tsev muaj, cov av nkos, thiab stair treads. Nws qhia cov tseev kom muaj rau cov khoom siv, qhov ntev, qauv, thiab kuaj.
4. ** Dab tsi loj yog ASTM D790? **
ASTM D790 yog ** tsis yog qhov loj me me **. Nws yog tus qauv txheej txheem taw qhia ** Lub npe "Flexural zog ntawm unreinforced thiab kev txhawb nqa hluav taws xob thiab cov ntaub ntawv insulating thiab cov ntaub ntawv insulating hluav taws xob". Nws txhais cov txheej txheem los txiav txim siab ntawm cov khoom siv roj yas siv cov qauv qauv yas siv cov qauv sib txawv (feem ntau 127 hli X 3.5 hauv x 0..125 hauv).
5. ** Dab tsi yog AstM C76? **
ASTM C76 npog "Foom Assefault pob zeb culvert, cua daj cua dub, thiab dej phwj tuaj **. Nws qhia txog cov ntaub ntawv, cov qauv tsim, tsim cov txheej txheem, feem ntau 12 ntiv tes sib zog ntawm 144 ntiv tes sab hauv lub taub) siv rau hauv cov kev sib tsoo ntawm cov kab ke.
