Q: Q355 steel phaj npe txhais li cas?
A: "Q" sawv cev rau lub zog tawm los, thiab "355" qhia tias qhov tsawg kawg nkaus lub zog yog 355 MPa rau lub thickness ≤ 16 hli.
Q: Lub teb chaws tus qauv twg Q355 steel phaj ua raws li?
A: Nws ua raws li GB / T 1591-2018 "Low Alloy High Strength Structural Steel" tus qauv.
Q: Cov qib zoo ntawm Q355 steel phaj yog dab tsi?
A: Nws muab faib ua tsib qib: Q355A, Q355B, Q355C, Q355D, thiab Q355E. Qhov sib txawv nyob ntawm qhov ntsuas qhov ntsuas kub thiab cuam tshuam lub zog xav tau.
Q: Kev sib raug zoo ntawm Q355 thiab qib qis Q345 yog dab tsi?
A: Q355 yog qib hloov kho tshiab rau Q345, nrog rau 10 MPa nce hauv cov khoom muaj zog, kev ua kom zoo ntawm cov tshuaj muaj pes tsawg leeg thiab cov khoom siv kho tshuab, thiab tuaj yeem hloov pauv Q345 rau ntau yam khoom siv.
Q: Puas yog Q355 steel phaj cais raws li qis- carbon steel lossis siab - carbon steel?
A: Nws belongs rau qis- alloy low- carbon steel, nrog cov ntsiab lus carbon feem ntau ≤0.20%, muaj ob lub zog siab thiab zoo weldability.