Classification And Application Of Galvanized Sheets

1) What is Galvanized Steel Classification?

 

Galvanized steel is classified based on its coating thickness and the type of coating process used. The two main classifications are:

Hot-Dip Galvanized Steel (HDG): This type of galvanized steel is produced by immersing the steel in a bath of molten zinc. It results in a thicker and more durable coating compared to other methods.

Electro-Galvanized Steel (EG or EGI): This process involves applying a thin layer of zinc onto the steel through an electroplating method. It produces a thinner coating compared to hot-dip galvanizing.

Additionally, galvanized steel can be further classified based on coating thickness, which is specified by the weight of the zinc coating per unit area. These classifications include:

G90 (0.9 oz/ft² or 275 g/m²)

G60 (0.6 oz/ft² or 183 g/m²)

G40 (0.4 oz/ft² or 122 g/m²)

These classifications indicate the level of corrosion resistance and durability that the galvanized steel provides.

 

2) What are Galvanized Steel Applications?

 

Galvanized steel finds a wide range of applications across various industries due to its corrosion resistance and durability. Some common applications include:

 

1. Construction and Architecture:

Galvanized steel is used extensively in construction for structural components, roofing, siding, fences, handrails, and other architectural elements. It provides long-lasting protection against environmental elements.

2. Automotive Industry:

It is utilized in the manufacturing of automotive body panels, chassis components, exhaust systems, and various other parts that require corrosion resistance.

3. Infrastructure and Transportation:

Galvanized steel is used for bridges, highway guardrails, traffic signal poles, light posts, and other transportation-related structures due to its resilience in outdoor environments.

4. Agriculture and Farming:

It is used for fencing, barn structures, and agricultural equipment, as galvanized steel can withstand exposure to harsh outdoor conditions.

5. Water and Utility Systems:

Galvanized pipes and fittings are commonly used in water distribution systems, water treatment plants, and wastewater handling due to their corrosion resistance.

6. Electrical Transmission:

Galvanized steel is employed in electrical transmission towers and utility poles, providing stability and longevity in outdoor settings.

7. Appliances:

It is used in the production of various household appliances such as washing machines, dryers, refrigerators, and ovens for its corrosion-resistant properties.

8. Industrial Equipment:

Galvanized steel is utilized in manufacturing equipment, storage tanks, and other industrial machinery that may be exposed to corrosive substances.

9. Outdoor Furniture and Decor:

Due to its weather resistance, galvanized steel is used to create outdoor furniture, decorative items, and garden structures.

10. Marine and Offshore Structures:

Galvanized steel is employed in marine environments for applications like shipbuilding, offshore platforms, and coastal infrastructure where corrosion resistance is crucial.

11. HVAC Systems:

It is used in ductwork, ventilation systems, and HVAC units to withstand the varying environmental conditions.

12. Solar Energy:

Galvanized steel is used in the construction of solar panels, mounting structures, and support frames due to its durability and resistance to environmental exposure.

 

These are just a few examples, and the versatility of galvanized steel means it is employed in numerous other industries and applications as well.