0.3–3.0mm Big Spangle Hot Dipped Galvanized Steel Sheet 35–1250mm Width for Outer Wall Cladding Applications

1. Product Overview

Big spangle hot dipped galvanized steel sheet is characterized by a visible zinc crystal pattern on the surface, commonly used in architectural applications requiring decorative appearance.

The coating range Z60–Z275 provides effective corrosion protection, making it suitable for outer wall cladding and building envelope systems.

2. Technical Solution

Performance is based on:

• Zinc coating Z60–Z275 providing sacrificial corrosion protection

• Big spangle structure formed during controlled cooling of zinc layer

• Surface treatments enhancing storage stability and processing

• Compatibility with forming and installation processes

3. Specifications

4. Application

• Outer wall cladding panels

• Roofing and building envelope systems

• Industrial and residential construction

• Container and structural panels

• Decorative architectural surfaces

5. Processing

• Cutting and slitting

• Roll forming for wall panels

• Bending and installation fabrication

• Surface coating if required

6. Advantages

• Distinct big spangle surface for visual applications

• Stable corrosion resistance for outdoor use

• Wide width range for flexible design

• Good processing adaptability

7. How to Choose

• Decorative exterior → Big spangle preferred

• Painting required → Minimized or Zero spangle

• General construction → Z80–Z120

• Harsh outdoor environment → Z180–Z275

8. FAQ

Q1: What is big spangle galvanized steel?
It refers to visible zinc crystal patterns formed during solidification of the coating.

Q2: Is big spangle suitable for painting?
Not recommended. Minimized or zero spangle is better for coating adhesion.

Q3: What coating is suitable for outer walls?
Z120–Z275 is typically used for external cladding.

Q4: Does spangle affect corrosion resistance?
No, corrosion resistance mainly depends on zinc coating weight, not spangle size.