Welding Galvanized Steel Precautions. You simply use a 2 or 3 pass method. This is also another reason why you shouldnt use galvanized steel utensils while cooking.
Masks that do not include changeable filters are unable to capture the fine particulates from zinc fumes. Yes to answer the million dollar question galvanized steel can be welded. However because of the galvanized zinc coating the metal becomes extremely toxic whenever its heated.
Welding galvanized steel should always be done in well-ventilated locations to prevent the inhalations of fumes due to the potentially toxic nature or lead and zinc.
If adequate ventilation cannot be provided personnel who may be exposed to fumes must be equipped with hose masks or air respirators. Take the proper safety precautions by wearing a welding mask a good welding respirator gloves and an apron. Removing the coating and re-spraying or painting the weld seam after welding to regain corrosion resistance. As for welding galvanized steel you do not have to grind the weld area at all.