Galvanization is the practice of covering steel or iron with a durable zinc coating to avoid rusting. Hot-dip galvanizing is the most popular process used in galvanized sheet metal fabrication shops. This is the method of protecting GI sheet metal components by immersing them in molten zinc.
This protection is provided in many ways. It operates as a sacrificial anode, and that’s the key part of a galvanic cathodic protection device used to protect submerged or buried oxide layer when the coating layer is clean. It prevents substances that are corrosive from reach out to the underlying steel or iron. This means that once the coating is scratched, the remaining zinc would protect the exposed steel or iron.
So, which sheet metal projects demand such a time-consuming protection operation? We’ve compiled a list of the most common applications for galvanized sheet metal:
Building projects: Commercial construction projects are the most prevalent application for sheet metal. Galvanized sheet metal is used for a variety of applications, including:
- Building frames
- Industrial walkways
- Street Furniture
- Support Beams
Electronics: Zinc coating is used on computer casings and electronic devices because it is wet and rust-resistant.
Nails, nuts, and bolts: Consequently, the hot-dip coating process adds much more fill to the thread of 3/8-inch and smaller nuts and bolts, reducing their strength.
Electro-galvanizing (a procedure for which an electric current passes through a saline/zinc solution with a steel conductor and zinc anode) and stainless steel are used instead. Electro-galvanized nuts and bolts are used in light mechanical goods such as automobiles and bicycles.
Piping: In the early twentieth century, galvanized piping replaced cast iron and lead in cold-water plumbing. Galvanized plumbing has a lifespan of approximately 70 years, depending on impurities in the water supply, proximity to power grids, zinc size and shape, and whether the piping was covered on the inside and outside.
Some galvanized piping was lined with epoxy resin to improve its durability. Epoxy resin is a petroleum-derived material with excellent binding, chemical and thermal stability, and insulation properties.
For interior water drinking service in apartments, schools, and other similar sites after World War II, galvanized pipes were replaced with copper and plastic piping. Outdoor applications involve the metal’s superior mechanical properties, particularly in bad weather, continue to use galvanized steel pipes.
Playground equipment: Children’s playground equipment, such as bicycle racks, jungle gyms, and swing sets, is made of galvanized steel so it is rust-resistant.
Transportation: Automobiles and airplanes are the largest buyers of galvanized steel, which is used in the following industries:
- Pans for frying
- Brakes for parking
- Roofing services
- Places to sit
- Housing in the spring
Wire rope: Although wire rope is an overstressed product, metal corrosion caused by the hot-dip coating process may decrease the steel’s strength on a measurable scale. The introduction and eventual infusion of hydrogen into the metal cause the steel to become fragile.
Sheet metal is used in industries like electric cables, constructing binding materials, door locks, and more to come to a solution.
In conclusion, Zinc is corrosion-resistant, moisture-resistant, rust-resistant, and scratch-resistant. It protects metals during shipping, installation, and services (which is also not necessary quite often due to galvanization’s self-healing attributes). These endeavors, ranging from playgrounds to laptops to automobiles and helicopters, are nothing without hot-dip galvanizing.
DANA STEEL is a hallmark division of Dana Group and is one of the largest and most modern manufacturers of Hot Dip Galvanized (GI), Aluzinc(AZ), Prepainted Galvanized(PPGI), Prepainted Aluzinc (PPAZ) & Prepainted Aluminum((PPAL) Coils in the Region. All our products are PROUDLY MADE IN U.A.E. and exported to more than 50 countries worldwide.