Do galvanized steel channels need anti rust treatment?
Just like roadside poles, most of them are hot-dip galvanized, and they also have to be passivated. Of course, if you apply the paint again, the rust proof effect will be better.
Galvanized channel steel does not need to be treated with antiseptic, if it must be done after welding.
Galvanized layer can play a good role in rust prevention, rust prevention can not be done anymore.
