Q235b steel phaj yog cov hlau tsis tshua muaj hlau nyob hauv Suav teb, thiab nws cov khoom muaj xws li carbon (C), silicon (Si), manganese (Mn), phosphorus (P) thiab sulfur (S).
Cov txheej txheem ntawm Q235b steel phaj suav nrog kub dov thiab txias dov. Ntawm lawv, cov txheej txheem kub dov yog kom sov lub billet mus rau lub xeev kub siab, thiab tom qab ntawd tsim ib qho zoo ntawm cov hlau los ntawm kev siv tshuab siab. Cov txheej txheem txias dov yog tsim cov hlau nrog qee yam khoom los ntawm kev nias thiab ncab cov txheej txheem ntawm chav tsev kub.
Vim qhov zoo plasticity, toughness thiab lub zog ntawm Q235B steel phaj, nws yog dav siv nyob rau hauv kev tsim kho, choj, tsheb ciav hlau thiab lwm yam teb. Hauv kev tsim kho, Q235b steel daim hlau feem ntau yog siv rau hauv kev tsim cov thav duab, txhawb cov qauv, thiab cov qauv thauj khoom; nyob rau hauv lub tshav pob ntawm cov choj, Q235b steel daim hlau feem ntau yog siv nyob rau hauv lub chaw tsim khoom ntawm lub ntsiab qauv thiab lub cev pob txha ntawm cov choj; nyob rau hauv lub tshav pob ntawm kev tsheb nqaj hlau, Q235b steel daim hlau feem ntau yog siv nyob rau hauv subway chaw nres tsheb, teeb liab yees, thiab lwm yam. Kev tsim cov tsev.
