Galvanized sheet is a steel sheet coated with zinc on its surface, mainly used for corrosion prevention. The production mainly involves hot galvanizing, and is widely used in fields such as construction and household appliances.
📌 Overview of Galvanized Sheets
A galvanized sheet is a sheet of low-carbon steel with zinc coating applied to prevent corrosion. It is manufactured through hot-dip or electroplating processes. Its core function is to extend the service life of the steel sheet by 1. Its applications cover construction, light industry, automobiles, household appliances, electronics, and other industries. In recent years, it has grown rapidly due to the increasing demand for lightweight construction and the popularity of household appliances.
📌 Classification of Production Processes
| Process Type | Characteristics | Current Status/Applications |
| Hot Dipping Galvanizing | Original sheet undergoes annealing, acid washing, and solvent coating before being immersed in zinc liquid, resulting in a thick and highly corrosion-resistant coating 1 | Mainstream process, divided into external line annealing and internal line annealing types |
| Electro Galvanizing | Thin coating, good processing performance but relatively weak corrosion resistance 5 | Suitable for low-corrosion environments |
| Alloyed Galvanizing | After hot immersion, heating generates a zinc-iron alloy film, enhancing coating and welding performance 5 | Used in specific scenarios |
| Single-sided/Dual-sided Differential Galvanizing | One-sided galvanizing or different thicknesses of zinc layers on both sides, suitable for welding and coating requirements 5 | Minor demand |
Main brands: DC51D+Z (for general purposes), S280GD+Z (for structural applications), etc.