Dab tsi yog qhov txawv ntawm Q235 thiab A3 steel?
A: Tib yam khoom. A3 yogqub Soviet - era designation; Q235 yog lub npe tshiab Suav GB / T 700.
Q235 vs Q355: Qhov sib txawv tseem ceeb?
A:
Tawm tswv yim: Q235=235MPa; Q355=355MPa
Alloy: Q235= carbon hlau; Q355=low- alloy (Mn, Si)
Siv: Q235=general; Q355=siab-lub zog, txias-cov qauv tiv taus.
Q235 puas tuaj yeem siv sab nraum zoov?
A:Yog (sivQ235C/D) nrog txheej txheej; zam Q235A / B hauv qhov chaw txias / ntub sab nraum zoov.
Puas yog Q235 haum rau kev khoov txias?
A: Zoo heev txias bendability: 180℃khoov xeem dhau; khoov txoj kab uas hla d=1.5 × thickness (a).
Tus nqi ntawm Q235 yog dab tsi?
A: Tsawg- nqi, feem ntau economic qauv steel nyob rau hauv Tuam Tshoj; pheej yig dua Q355, 45 #, lossis stainless hlau.