if you are going to used this bumper as a tow point, I suggest you have someone with a 220 welder go over the beads.
while the welds LOOK pretty decent, I'm skeptical how much penetration is present, since there should be BLUE/BROWN heat marks on the BACK side of the 1/4" plates. Since none are present, I can only assume the weld is not hot enough.
If the bumper will NOT be used as a tow point, party awn! looks fine!