Galvanized sheet refers to a steel sheet that has been coated with a layer of zinc to protect it from corrosion. This process is called galvanization, and it involves immersing the steel sheet in a bath of molten zinc, which forms a metallurgical bond with the steel. Galvanized sheet is used in a wide range of applications, including roofing, siding, gutters, and HVAC ductwork. It is known for its durability, strength, and resistance to rust and corrosion. Galvanized sheet is also easy to work with, making it a popular choice for construction and manufacturing projects.