The handles are not going to be in contact with the sap/syrup, correct? What are your pans made of and how are you planning on fastening these handles to the pan?

If their not going to touch the liquid, than you have no health problem. Although welding galvanized metals gives off harmfull fumes. Disimilar metals will corrode when in contact with each other. In time, those handles would look bad on a nice stainless pan, in my opinion. But..., its hard picking up pans with no handles at all.

Steve