Description:

(1) Normal spangle coating

The zinc coating, during normal solidification, forms into a deposited layer with free-grown zinc crystals and a distinct zinc flower-like appearance.

(2) Minimized spangle coating

During the solidification process, the zinc grains are artificially restricted to form the finest zinc flower coating possible.

(3) Zinc-Free Coating

A non-visual zinc flower appearance, uniformly even coating obtained by adjusting the electroplating bath's chemical composition.

(4) Zinc-Iron Alloy Coating

The steel strip undergoes heat treatment after passing through the galvanizing bath liquid, creating an alloy layer of zinc and iron throughout the coating. This coating has a dark gray appearance, lacks metallic luster, is prone to flaking during intense forming processes, and is suitable for direct painting without further treatment, except for general cleaning.

(5) Differential Coating

The zinc coating on both sides of the galvanized steel plate must have different zinc layer weights.

(6) Skin Pass

Cold rolling process with a slight degree of deformation for zinc-plated steel sheets, performed for one or more of the following purposes.

Enhance the surface appearance of galvanized steel sheets or make them suitable for decorative coatings; temporarily minimize the visibility of processing-induced slip lines (Lüders lines) or creases in the finished product.