Is there any hidden danger in smashing the steel bar on the door beam?

There are hidden dangers. The iron under the beam bears the tension. If the two steel bars below are removed, the mechanical properties of that beam will be greatly reduced. If there is no obvious effect by adding angle iron below as you said, then reinforce it with planting steel bars. If the property is found at the time of acceptance, the decoration deposit will definitely not be refunded, and the fine is not clear.

I find that many people are asking this question, and I advise you to buy a house, and don't dismantle the load-bearing structure at will! !