I know that there is a halakhic necessity to tovel a new pot. However, has anyone ever heard of the halakhic necessity to do hagala on a new pot? Reason for asking was this.
In Israel and not In America they Have this Minhag, because of the treatment used while making the Pot for certain types of metal including steel and aluminum are rolled out, the rollers are smeared with animal fat. For an extensive answer see HERE
Apparently there was (is?) a practice to glaze new aluminium pots with non-Kosher fats before selling them. Hacham Ovadia (Yabia Omer Y"D 6:10) ruled that such pots do not require hag'alah, because the glaze carries has no taste, and may be used lechatechila without hag'alah.