Galvanized Sheet

What is Galvanized Sheet Metal?

Galvanized sheet metal is a sheet of steel that has been coated in zinc to make it resistant to corrosion. Because steel is made of iron, it will quickly rust when exposed to moisture, and over time that rust will corrode the steel to the point of failure. By coating the steel in a layer of zinc, a barrier is formed between the sheet metal surface and external environment. This prevents corrosion and rusting and allows the metal to be used in a variety of environments, including harsh weather conditions. Galvanized sheet metal is so durable and long-lasting that it is used not only in HVAC ductwork and throughout the construction industry, but also in the automotive industry, the electronics industry, power generation and communications, food processing, and in road construction, among others.  

How is Sheet Metal Galvanized?

Steel sheet metal can be galvanized using a few different techniques. These include:

• Hot-dip galvanizing: This is a popular technique that has been used for more than 100 years, and it involves submerging the sheet metal in molten zinc. Of all the techniques, hot-dip galvanizing is the most economical, reliable, and durable way to galvanize steel sheets.
• Electrogalvanizing: This type of galvanization relies on electroplating. The electroplating technique bonds the zinc layer to the surface of the sheet metal. This allows for a very thin and accurate layer of protection that also has a better surface finish.
• Sherardizing/Dry galvanization:This technique involves heating fabricated sheet metal parts in a rotating drum with metallic zinc. As the zinc dust evaporates, it will diffuse into the sheet metal. This is ideal for sheet metal parts that have already been fabricated and require zinc coating on its inner section.
• Thermal spraying: Thermal spraying involves spraying the surface of the sheet metal with a coating of zinc. As the zinc particles land on the sheet metal, they flatten and adhere to the surface. The sheet metal is then heated to complete the galvanization.

 Galvanized Steel Sheets have gained significant popularity across various industries and manufacturing sectors due to their exceptional breaking strength, easy installation, durability, and resistance to corrosion and harsh environments. In the realm of roofing, Galvanized Steel Sheets are widely employed, primarily because of their lightweight nature. Furthermore, this material serves as a fundamental component for manufacturing additional roofing and facade elements, forced ventilation systems, ducts, gutters, and downspouts. It also finds extensive use in fabricating various structural elements and parts utilized in nearly all areas of industrial and civil engineering construction. Additionally, Galvanized Steel Sheets are commonly utilized in the production of profiled sheeting, metal tiles, and metal siding. Moreover, they are employed in the construction of silos, temporary storage facilities, and agricultural silages. In practical applications, Galvanized Steel Sheets can be found virtually everywhere, as their elements are present in numerous structures around us. From ships, airports, and railway stations to billboards, cars, stairs, cornices, fences, and other metal structures, Galvanized Steel Sheets play an integral role.

Benefits

There are numerous advantages when using galvanized steel in a commercial setting. It is way more affordable than other types of treated structural steel, and has fewer maintenance and upkeep requirements. Due to its steel composition, galvanized steel is sturdy, reliable and can last over 50 years in the right environment. The zinc coating protects the steel from rust and also safeguards the steel from any damage which may occur during transportation or installation. The surface of galvanized steel requires no additional preparation, inspection, paint, or coating, which means it usually be put to use right away.