Q345 S355jr Carbon Equal Angle Steel Galvanized L Shape Mild Steel Lub kaum sab xis

1.Dab tsi yog Q235 steel?
A: Q235 yog ib hom carbon steel qauv (me me hlau) hauv Suav teb, txhais los ntawm GB / T 700-2006. "Q"=yield zog; "235"=yam tsawg kawg nkaus yield zog ntawm 235 MPa (rau thickness Tsawg dua los yog sib npaug rau 16mm). Yav tas los hu ua A3 steel.
2. Q235 yog dab tsi?
A: Plaub qib (A/B/C/D), sib txawv ntawm qhov cuam tshuam toughness thiab impurity txwv.
3. Q235A txhais li cas?
A: Qib A: Tsis tas yuav tsum muaj kev xeem cuam tshuam; siab tshaj S/P txwv (S Tsawg dua lossis sib npaug rau 0.050%, P Tsawg dua lossis sib npaug rau 0.045%); rau tsis yog-tseem ceeb, tsis yog-welded qhov chaw.
4. Q235B txhais li cas?
A: Qib B: 20 ​​degree cuam tshuam kev xeem (Ntau dua lossis sib npaug ntawm 27J); S Tsawg dua lossis sib npaug li 0.045%, P Tsawg dua lossis sib npaug li 0.045%; feem ntau qib rau cov qauv.
5. Q235C txhais li cas?
A: Qib C: 0℃cuam tshuam kev xeem (Ntau dua lossis sib npaug ntawm 27J); qis S / P (S Tsawg dua lossis sib npaug rau 0.040%, P Tsawg dua lossis sib npaug rau 0.040%); rau cov qauv sab nraum zoov, qhov chaw txias.