Q235 phaj yog dab tsi?
A: Q235 phaj yog cov pa roj carbon steel phaj tau teev tseg hauv Suav teb tus qauv GB / T 700-2006. Nws belongs rau low-carbon steel thiab feem ntau hu ua "A3 steel".
Lub npe Q235 txhais li cas?
A: "Q" sawv cev rau lub zog tawm los; "235" qhia qhov tsawg kawg nkaus lub zog loj dua los yog sib npaug rau 235 MPa (thaum phaj thickness Tsawg dua lossis sib npaug li 16 hli).
Lub teb chaws twg cov qauv Q235 ua raws?
A: Khoom siv tus qauv: GB / T 700-2006 "Carbon Structural Steel"
Hlau phaj txheem: GB / T 3274 "Kub- Rolled Steel Phaj thiab Strips ntawm Carbon Structural Steel thiab Low Alloy Structural Steel"
Dimensional kam rau ua: GB / T 709-2019
Muaj pes tsawg qib zoo ntawm Q235 muaj? Dab tsi yog qhov txawv? A: Q235 muab faib ua plaub qib: A, B, C, thiab D. Qhov sib txawv tseem ceeb nyob hauv qhov cuam tshuam qhov kub thiab txias thiab cov ntsiab lus sulfur thiab phosphorus:
Q235A: Tsis muaj qhov cuam tshuam rau kev sim, S Tsawg dua lossis sib npaug rau 0.050%, P Tsawg dua lossis sib npaug rau 0.045%
Q235B: Kev ntsuas cuam tshuam ntawm 20 degree, S Tsawg dua lossis sib npaug rau 0.045%, P Tsawg dua lossis sib npaug rau 0.045% (feem ntau siv)
Q235C: Kev ntsuas cuam tshuam ntawm 0 degree, S Tsawg dua lossis sib npaug rau 0.040%, P Tsawg dua lossis sib npaug rau 0.040%
Q235D: Kev sim cuam tshuam ntawm -20℃, S Tsawg dua lossis sib npaug rau 0.035%, P Tsawg dua lossis sib npaug rau 0.035% (rau kev siv kub tsawg)
Dab tsi yog qhov txawv ntawm Q235 thiab Q195, Q215, thiab Q355?
A: Yield zog nce nyob rau hauv qhov kev txiav txim. Q235 muab tus nqi zoo tshaj -kev ua tau zoo piv thiab yog siv dav tshaj plaws; Q355 muaj zog dua tab sis kim dua.