We primarily use industrial aluminum and stainless steel. Occasionally, we use brass to add embellishments and highlights. We never use Galvanized steel or any other material that could have detrimental effects on health. In short, zinc oxide is bad for you. Heating galvanized steel can result in an unpleasant condition called welder's fever.
Caged animals can develop illness brought on by swallowing or licking galvanized parts.
We've known many people in the metal working profession forced to take extended sabbaticals due to various kinds metals poisoning. We work intimately with our construction materials and avoid galvanized steel out of concern for both our own health and that of our customers. Additionally, the zinc coating on galvanized steel, used as a rust deterrent, is by no means permanent. The coating will often corrode into white rust which then results corrosion of the steel underneath. Due to the nature of the process the steel used in galvanizing is rarely of premium quality.