Ggalvanized coils or galvanized sheet coils—are metal products created by applying a zinc coating to the surface of hot-rolled or cold-rolled steel strips via a continuous galvanizing process; the predominant production method is hot-dip galvanizing.

Based on the substrate type, they are classified into hot-rolled galvanized steel coils and cold-rolled hot-dip galvanized steel coils.
Based on performance grades, they are categorized into seven levels: general use, mechanical forming (lock-forming), stamping, deep drawing, non-aging extra-deep drawing, and structural grade.
Based on the surface structure of the zinc layer, they are classified into four types: regular spangle, minimized spangle, zero spangle, and zinc-iron alloy coating; coating weights range from Z60 to Z600.
Surface treatments such as oiling, seal coating, and phosphate can be applied prior to shipment; special finishes—including anti-fingerprint and color coatings—are also available upon request.
Key performance advantages: They combine excellent corrosion resistance with a smooth, high-quality surface finish, while offering superior paint adhesion and weld ability. Suitable for various cold-forming applications, they enable lightweight designs without compromising structural strength, striking a balance between cost-effectiveness and practicality.