Cold Rolled Galvanized Steel Coil
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5. Smooth production ability (50000tons/month)
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7. E-mail：support@lyhsteel.com
introduction
Cold Rolled Galvanized Steel Coil is a steel material processed by cold rolling and hot-dip galvanizing technology commonly used in construction, automobiles, home appliances, and other industries.
feature
Good surface quality
Through the cold rolling process, Cold Rolled Galvanized Steel Coil has a smooth and flat surface, and the surface roughness is maintained between Ra 0.6–1.2μm, ensuring better coating adhesion and aesthetics, suitable for industries with high requirements on appearance such as home appliances and furniture.
Superior corrosion resistance
Using hot dip galvanizing technology, the surface of Cold Rolled Galvanized Steel Coil is evenly covered with a zinc layer, providing strong anti-corrosion protection. The thickness of the galvanized layer can reach 275g/m², which is particularly suitable for long-term exposure to humid or marine climate environments. Its corrosion resistance is several times that of ordinary steel.
Good formability
Using the tension control system and leveling technology, the bending radius of Cold Rolled Galvanized Steel Coil can be less than 1.5 times the plate thickness, allowing the steel coil to maintain good formability in a variety of processing processes such as cold stamping and welding.
Specifications
| Grade | DX51D, DX52D, DX53D, S220GD, S250GD, S280GD |
|---|---|
| Zinc Coating | 60-275 g/m² |
| Surface Finish | Regular spangle, minimized spangle, zero spangle |
| Thickness | 0.3 - 3.0 mm |
| Width | 600 - 1500 mm |
| Length | As per requirement (cut-to-length or coil) |
Mechanical Properties
| Property | DX51D | DX52D | S220GD |
|---|---|---|---|
| Yield Strength | ≥140 MPa | ≥140 MPa | ≥220 MPa |
| Tensile Strength | 270-500 MPa | 270-420 MPa | 300-440 MPa |
| Elongation | ≥22% | ≥26% | ≥24% |
Chemical Composition
| Element | DX51D | DX52D | S220GD |
|---|---|---|---|
| Carbon (C) | ≤0.12% | ≤0.12% | ≤0.20% |
| Manganese (Mn) | ≤0.60% | ≤0.60% | ≤1.20% |
| Phosphorus (P) | ≤0.10% | ≤0.10% | ≤0.10% |
| Sulfur (S) | ≤0.045% | ≤0.045% | ≤0.045% |
Applications
Construction Sector
Employed in roofing systems, exterior wall cladding, and load-bearing structural frameworks, where its superior corrosion resistance ensures longevity in harsh environmental conditions while maintaining dimensional stability.
Automotive Industry
Integrated into vehicle body panels, chassis assemblies, and safety-critical structural components, providing enhanced corrosion protection that extends service life.
Home Appliance Manufacturing
Specified for exterior casings of refrigeration units, laundry systems, and cooking appliances, combining an aesthetically pleasing surface finish with hygienic properties and resistance to humidity-induced degradation.
Furniture Production
Adopted in modular cabinetry systems and storage solutions, leveraging its smooth continuous-coil formability to achieve seamless aesthetics while ensuring durability against everyday wear and corrosion resistance in humid environments.
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