What is the difference between “Regular Spangle” and “Zero Spangle” galvanized steel?

Regular Spangle: Features the traditional “zinc flower” crystallization visible on the surface. It is a cost-effective choice for standard indoor cable containment in commercial buildings.

Zero Spangle: This material undergoes a specialized cooling process to suppress crystal growth, resulting in a smooth, uniform matte finish. Typically, Zero Spangle trunking utilizes a higher zinc coating mass (e.g., Z275), offering superior durability and a more premium aesthetic for high-spec international projects.