Prepainted Hot Dipped Galvanized Steel Sheet In Coil Zero Spangle Galvanized Steel
Zero spangle galvanized steel coil refers to a type of galvanized steel coil where the zinc coating has a smooth, uniform surface with no visible spangle pattern. This is achieved through specific manufacturing processes that control the solidification of the zinc coating. Zero spangle galvanized steel is often preferred for applications requiring a high-quality surface finish and good paint adhesion.
Here's a more detailed explanation:
What is Spangle?
Spangle refers to the visible, crystalline pattern that forms on the surface of hot-dip galvanized steel as the molten zinc solidifies. This pattern is a result of the way zinc crystals grow during cooling.
What is Zero Spangle Galvanized Steel?
Zero spangle galvanized steel is produced by modifying the solidification process of the zinc coating to minimize or eliminate the spangle pattern. This can be achieved through methods like:
Rapid Cooling:
Quickly cooling the steel after galvanizing to prevent large crystals from forming.
Zinc Powder Spraying/Mist:
Spraying zinc powder or water mist onto the surface to promote fine, uniform solidification.
Controlled Cooling:
Precisely controlling the cooling rate to minimize the formation of large crystals.
| Product Name | Prepainted Hot Dipped Galvanized Steel Sheet In Coil Zero Spangle Galvanized Steel |
| Material | Q195,Q235,Q235B,Q345,Q345B,SGCH,JIS G3302, ASTM A653,S280GD+Z, S350GD+Z,SGCC, DX51D/ DX52D, SGCC,DX51D+Z/ DX52D+Z |
| Thickness | 0.1-4mm |
| Width | 600-1500mm |
| Tolerance | +/-0.02mm |
| Coil Weight | 3-20tons |
| MOQ | 25 Tons (One 20ft FCL) |
| Surface Treatment | Light Oil, Unoil,dry, chromate passivated, non-chromate passivated. |
| Spangle | Regular Spangle,Small Spangle, Zero Spangle,Big Spangle |
| Payment | 30%T/T in advanced+70% balanced; irrevocable L/C at sight |
| Other | Insurance is all risks and accept the third party test |
Why Choose Zero Spangle?
Improved Appearance:
Zero spangle steel has a smooth, uniform surface, making it aesthetically pleasing, especially in applications where appearance is important.
Better Paint Adhesion:
The smooth surface provides a better base for painting, leading to improved paint adhesion and a more durable finish.
Applications:
Zero spangle galvanized steel is commonly used in:
Automotive Industry: For exterior panels and components.
Home Appliances: For visible parts of appliances like refrigerators and washing machines.
Construction: For roofing, siding, and other applications where a smooth, paintable surface is desired.
High-End Products: For products where appearance and quality are paramount.
In summary, zero spangle galvanized steel offers a smooth, uniform surface finish with excellent paint adhesion, making it a preferred choice for various high-end applications where appearance and durability are crucial.
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Prepainted Zero Spangle Hot Dipped Galvanised Coil ASTM Images
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