1.Dab tsi yog Q235B steel?
Teb: Q235B yog cov khoom siv roj carbon steel raws li Suav tus qauv GB / T 700. "Q" sawv cev rau lub zog tawm los, "235" qhia qhov tsawg kawg nkaus lub zog ntawm 235 MPa, thiab "B" sawv cev rau qib zoo nrog rau kev ntsuam xyuas ntawm chav tsev kub.
2.Dab tsi yog 20 # steel?
Teb: 20 # steel yog ib qho zoo carbon structural steel raws li Suav tus qauv GB / T 699. "20" qhia qhov nruab nrab carbon ntsiab lus ntawm 0.20%. Nws yog feem ntau siv rau cov khoom siv kho tshuab thiab cov kav dej.
3.Dab tsi yog cov tshuaj muaj pes tsawg leeg ntawm Q235B steel?
Teb: Cov tshuaj lom neeg muaj pes tsawg leeg ntawm Q235B steel: Carbon (C) Tsawg dua lossis sib npaug li 0.20%, Silicon (Si) Tsawg dua lossis sib npaug li 0.35%, Manganese (Mn) Tsawg dua lossis sib npaug li 1.40%, Phosphorus (P) Tsawg dua lossis sib npaug li 0.045%, Sulfur (Si) sib npaug 0.5 lwm yam.
4.Dab tsi yog cov tshuaj muaj pes tsawg leeg ntawm 20# steel?
Teb: Cov tshuaj lom neeg muaj pes tsawg leeg ntawm 20# steel: Carbon (C) 0.17-0.23%, Silicon (Si) 0.17-0.37%, Manganese (Mn) 0.35-0.65%, Phosphorus (P) Tsawg dua lossis sib npaug li 0.035%, Sulfur (S) Less dua 0.0 Cr. rau 0.25%, npib tsib xee (Ni) Tsawg dua lossis sib npaug li 0.30%.
5.Dab tsi yog cov khoom siv ntawm Q235B steel?
Teb: Cov khoom siv hluav taws xob ntawm Q235B steel: Yield zog Ntau dua lossis sib npaug ntawm 235 MPa, Tensile zog 375-500 MPa, Elongation Ntau dua lossis sib npaug li 26%, Lub zog cuam tshuam ntau dua lossis sib npaug rau 27 J ntawm chav tsev kub.
