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Galvanized (Zinc-coated) coil is produced by immersing a sheet of steel in a molten zinc bath, ensuring the surface adheres firmly to a layer of zinc. Utilizing a continuous zinc production process, the rolled steel sheet is continuously dipped into the melting zinc plating bath. After the process, it is immediately heated to approximately 500 ºC to generate a zinc and iron alloy membrane. This specialized galvanized coil offers exceptional coating tightness and superior weldability.
| Technical Details | |
|---|---|
| Technique | Hot Rolled / Cold Rolled |
| Application | Roofing, Wall Construction, Auto Industry |
| Special Use | High-strength Steel Plate |
| Spangle | Big / Regular / Minimum / Zero |
| Hardness | Soft; Full Hard (G550) |
| Coil Weight | 3-5 Tons |
| Surface | Chromated / Unoiled |
| Material | Chinese Code | Japanese Code | European Code |
|---|---|---|---|
| Commercial Use | DX51D+Z/DC51D+Z | SGCC | DX51D+Z |
| Drawing Quality | DX52D+Z/DC52D+Z | SGCD1 | DX52D+Z |
| Deep Drawing | DX53D+Z/DX54D+Z | SGCD2/SGCD3 | DX53D+Z/DX54D+Z |
| Structural Use | S220-S550GD+Z | SGC340-SGC570 | S220-S350GD+Z |
Spangles are formed during the hot-dip galvanizing process. The size and brightness depend on the zinc layer composition and cooling method.
Formed when spangle-promoting elements are added. Features coarse grains and excellent weather resistance. Ideal for guardrails, blowers, and ducts.
Small spangles are restricted during solidification for better coating performance. Zero spangles provide a uniform, smooth surface with extreme corrosion resistance, ideal for automotive components and home appliances.
Our products undergo rigorous testing to ensure durability and standard compliance.
