Production Process

A galvanized steel coil is a steel sheet coated with a layer of zinc to prevent rust. It is produced by cleaning and annealing steel, then dipping it in molten zinc (hot-dip galvanizing). The zinc coating provides strong corrosion resistance, making it ideal for roofing, automotive parts, and appliances. It comes in various thicknesses and surface finishes for different applications.

International Standards

Country	Standard Number	Corresponding Grade
China	GB/T 2518-2008	Q195, SGCC, etc.
Japan	JIS G3302	SGCC, SGCD1, SGCD2, SGCE, etc.
Europe	EN 10346	DX51D, DX52D, DX53D, etc.

Advantages

Property	Key Benefit
Corrosion Resistance	Maintains structural integrity in harsh environments
Durability	Long-term performance with minimal replacement needs
Cost Effectiveness	Higher initial cost offset by long-term savings
Coating Protection	Customizable protection levels for different applications
Environmental Adaptability	Reliable performance across diverse operating conditions

Key Applications

Industry Sector	Typical Applications
Construction	Roofing, siding, structural beams, purlins, wall panels
Automotive	Body panels, frames, chassis components, truck trailers
Appliances & HVAC	Ductwork, electrical enclosures, housings, ventilation systems
Agriculture	Grain bins, silos, equipment housings, livestock enclosures
Industrial	Storage tanks, conveyor systems, industrial shelving

Common Specifications

arameter	Common Specifications
Thickness	0.15 mm - 6.0 mm (0.006" - 0.236")
Width	600 mm - 1,500 mm (24" - 60")
Coil Weight	3-15 metric tons (typical)
Coil ID (Inner Diameter)	508 mm (20") or 610 mm (24")
Coil OD (Outer Diameter)	900-1,800 mm (35"-71")
Standard Lengths	Custom cut-to-length available (typical sheets: 2,000mm-6,000mm or 8'-20')

Coating Type Selection

Option	Characteristics	Best For
Galvanized (Zinc-Coated)	Shiny/spangled finish, excellent corrosion resistance, good formability	Outdoor structures, roofing, automotive panels, unpainted applications
Galvannealed (Zinc-Iron Alloy)	Matte finish, superior paint adhesion, scratch-resistant	Painted components (e.g., appliances, road signage, architectural cladding)

Packaging

FAQ

Q: What is ASTM A653?

A: A standard for hot-dip zinc-coated (galvanized) or zinc-iron alloy-coated (galvannealed) steel sheets, used for corrosion resistance in construction, automotive, and appliances.

Q:What does "G60" or "G90" mean?

A: Coating weight (oz/ft²):

G30 = 0.30 (light duty)

G60 = 0.60 (general use)

G90 = 0.90 (harsh environments)

Q:What are surface finish options?

Regular spangle (visible crystals)

Minimized/zero spangle (smooth for painting)

Q:Can the roll weight be customized?

A:Of course, we customize according to customer needs.

Q:What is the minimum order quantity?

A:Usually 10 tons, special circumstances can be negotiated.