1. The carbon and sulfur content of Q235A steel is higher than that of q235b steel.
2. Q235A steel does not impact, while Q235B steel is 20 degrees normal temperature impact.
3. Q235A steel contains chemical elements: C≤0.22%, Mn 0.3%-0.65%, Si≤0.35%, S≤0.050, P≤0.045.
4. Q235B steel contains chemical elements: C≤0.20%, Mn 0.3%-0.7%, Si≤0.35%, S≤0.045, P≤0.045.
5. Q235A steel is generally used in the hot-rolled state. The rolled section steel, steel bars, steel plates, and steel pipes can be used to manufacture various welded structural parts, bridges and some ordinary machine parts, such as bolts, tie rods, rivets, collars and connecting rod and so on.
6. Q235B steel is currently the widest type of steel pipe for water, oil, natural gas, urban construction and other industries.
