A galvanized steel coil is a zinc-coated steel product widely used in construction, automotive, and manufacturing due to its superior corrosion resistance and durability. Whether you're sourcing materials for roofing, industrial machinery, or structural components, understanding the specifications, benefits, and applications of galvanized coils is crucial for making the right choice.
A galvanized steel coil is a zinc-coated steel product widely used in construction, automotive, and manufacturing due to its superior corrosion resistance and durability. Whether you're sourcing materials for roofing, industrial machinery, or structural components, understanding the specifications, benefits, and applications of galvanized coils is crucial for making the right choice.
Key Specifications:
Thickness: 0.2mm-6mm (standard), up to 25mm available
Width: 600mm-2000mm (custom sizes possible)
Coating types:
Hot-dip (thicker, more durable)
Electro-galvanized (thinner, smoother finish)
Common standards: ASTM A653, JIS G3302, EN 10346
Top Benefits:
More affordable than stainless steel
Easy to weld and fabricate
Low maintenance requirements
Main Applications:
Construction: roofing, wall panels, structural supports
Automotive: chassis parts, exhaust systems
Industrial: HVAC components, electrical enclosures
Q: Can galvanized steel be painted?
A: Yes, but proper surface preparation (e.g., degreasing, priming) is required.
Q: What’s the difference between GI and PPGI coils?
A: GI (Galvanized Iron) has a zinc coating, while PPGI (Pre-Painted Galvanized Iron) adds a colored paint layer for aesthetics.