The surface types of galvanized steel coils can usually be classified as follows:
Regular Spangle: Regular galvanized surfaces have regular zinc blooms and are typical of galvanized steel surfaces. The zinc flecks are uniform in size and distribution and exhibit a typical metallic luster. This surface is suitable for a variety of applications, including construction, automotive manufacturing, etc.
Minimized Spangle: Minimized spangle surfaces are smaller and more densely distributed than regular galvanized. This surface is typically flatter and is used in applications where a smoother surface is desired.
Zero Spangle: A Zero Spangle surface is a surface with no visible zinc flecks. It provides a more uniform appearance and is used in applications where appearance is important, such as decorative applications in architecture.
Skin-Passed: A skin-passed surface is obtained through a special rolling process that results in a slightly textured surface. This surface improves the adhesion of coatings and is suitable for painting or other surface treatments.
Galvalume: Galvalume surfaces are a mixture of aluminum and zinc plated onto steel surfaces to provide improved corrosion resistance for environments requiring high corrosion resistance.
Custom Coatings: Some manufacturers can provide custom coatings such as color coatings, textured coatings, etc. to meet the appearance and performance requirements of a specific application.
Choosing the right type of surface depends on the specific application requirements. Different surface types can offer different appearance, corrosion resistance and mechanical properties, so selection needs to be considered based on the characteristics of the project.
