SGCC SPCC 40g-275g Hot Dipped Galvanized Steel Plate Description
Galvanized steel sheet, also known as galvanized steel plate, refers to a type of steel that has been coated with a thin layer of zinc to protect it from corrosion. The galvanization process is usually done through hot-dip galvanizing, where the steel is immersed in molten zinc, or through electro-galvanizing, where zinc is applied using an electric current.
The zinc coating serves as a protective barrier that prevents moisture and oxygen from reaching the steel surface, which helps to avoid rusting and extends the lifespan of the steel. Galvanized steel is widely used in various industries, including construction, automotive, and manufacturing, for products such as roofing, siding, ducts, and steel structures.
Key Advantages
- Corrosion Resistance: The zinc coating offers excellent protection against rust and corrosion, even in harsh environments.
- Durability: It extends the lifespan of the steel by preventing degradation over time.
- Low Maintenance: The protective layer reduces the need for frequent maintenance or replacement.
- Versatility: Galvanized steel is available in various thicknesses and forms, making it suitable for different applications.
Hot-dip vs Electro-galvanized Steel Sheets
Hot-dip Galvanized Steel Sheet is made by immersing the steel sheet in a molten zinc bath at about 500 °C to attach a zinc layer to the surface. The thickness of hot-dip zinc coating is more than 30 g/m², or even as high as 600 g/m².
Electro-galvanized Steel Sheet uses electrolysis to form a uniform and dense layer on the surface of the metal. The zinc layer of the electro-galvanizing steel sheet is only 5-30 g/m². So its corrosion resistance is not as good as hot-dip galvanized sheets.
Galvanized Steel Sheet Gauge Chart
Tensile test, zinc coating weight and bending tests carried out per standard. Packaging: steel pallets with protective corner boards, plastic film and kraft paper wrapping, seaworthy export packing.
