1. Q: ASTM A500 yog dab tsi?
A:ASTM A500 yog tus qauv tshwj xeeb los ntawm ASTM International uas npog cov khaub thuas - ua welded thiab seamless carbon steel structural tubing nyob rau hauv round, square, thiab rectangular duab. Nws yog feem ntau siv rau kev siv cov qauv thiab kev tsim kho.
2. Q: Hom hlau twg siv hauv ASTM A500?
A:ASTM A500 yog tsim los ntawm carbon steel. Nws yog txias-tsim steel, txhais tau tias qhov kawg shaping ntawm lub raj yog ua tiav nyob rau hauv chav tsev kub, uas ua rau nws muaj zog thiab txhim kho nws nto tiav piv rau kub - tsim cov khoom.
3. Q: Dab tsi yog qhov txawv ntawm Gr. B thiab Gr. C?
A:Thawj qhov sib txawv yog lub zog txhua yam.
Qib B:Muaj qhov tsawg kawg nkaus tawm lub zog ntawm 46 ksi (kips ib square inch) rau round tubing thiab 50 ksi rau zoo li tus tubing. Nws muaj qhov sib npaug zoo ntawm lub zog thiab formability.
Qib C:Nws muaj qhov siab tshaj qhov ua tau zoo ntawm 50 ksi rau puag ncig tubing thiab 46 ksi rau cov tubing zoo li tus (cuam tshuam qhov kev hloov pauv), thiab muaj zog tensile ntau dua. Qib C feem ntau raug xaiv rau cov ntawv thov uas yuav tsum muaj kev thauj khoom ntau dua - cov kabmob muaj peev xwm.
4. Q: Dab tsi yog cov ntawv thov rau A500 steel yeeb nkab?
A:Vim nws lub zog thiab kev zoo nkauj, A500 tubing yog siv dav hauv cov qauv tsim, suav nrog:
Kev tsim vaj tsev (kem, kab teeb, trusses)
Choj Cheebtsam
Muaj thav duab thiab kev txhawb nqa
Cov khoom siv ua liaj ua teb
Stadiums thiab arenas
Kos npe rau ncej thiab txoj kev teeb ncej
5. Q: Qhov zoo ntawm A500 tubing tau txheeb xyuas li cas?
A:Kev ua tau zoo raug txheeb xyuas los ntawm qhov yuav tsum tau ua los ntawm cov chaw tsim khoom raws li tus qauv xav tau. Qhov no suav nrog:
Tensile Test:Txhawm rau kom paub tseeb tias lub zog muaj zog, tensile zog, thiab elongation.
Flattening Testlos yogKhoov Test:Txhawm rau xyuas qhov ductility thiab soundness ntawm vuam (rau welded tubing).
Tshuaj ntsuam xyuas:Yuav kom ntseeg tau tias muaj pes tsawg leeg ntawm cov hlau ua tau raws li cov kev txwv.
Cov ntaub ntawv ntsuam xyuas cov ntaub ntawv (MTRs) lossis Certified Mill Test Reports (CMTRs) feem ntau yog muab ua pov thawj ntawm kev ua raws cai.
