Hot-Dip Galvanized (GI) Coils
Hot-dip galvanized steel coil supplied to ASTM A653, EN 10346 and JIS G3302 , with commercial, lock-forming, structural and roofing grades for the UAE, GCC and African markets.
Technical overview.
Hot-dip galvanized coil is cold-rolled steel passed through a molten zinc bath; the zinc metallurgically bonds with the steel substrate and forms a self-healing, sacrificial barrier against corrosion. It is the most widely specified roofing and fabrication substrate in the region and the base material for both bare GI sheets and PPGI coils.
A 'GI coil' is a continuous strip of low-carbon steel that has been hot-dip galvanized on both faces under controlled line conditions. Coating mass is specified in g/m² of total zinc on both sides (Z-grade). The coil is typically supplied in widths of 600 – 1500 mm and slit, recoiled or roll-formed downstream into sheets, profiles, ducts, frames and decking.
Configured to your specification.
GI Coils is produced to project requirement. Specify the parameters below and we'll revert with a quote, mill availability and lead time.
Substrate, coating, certification.
Where gi coils is specified.
- Roll-formed corrugated and trapezoidal roofing sheets
- Steel decking & cladding panels
- Air-conditioning ducting (HVAC) and sheet-metal fabrication
- Door frames, partition systems & dry-wall studs
- Light-gauge steel framing for warehouses & pre-engineered buildings
- Pipe and tube manufacturing (CR / GI ERW)
- Cable trays, ladders & electrical enclosures
- Automotive panels & white-goods substrate
Specify by zinc coating.
Zinc coating mass (g/m² total, both faces) is the primary GI variable. Match the grade to the exposure environment and project life.
| Grade | Zinc (g/m²) | Per face | Service life | Typical use |
|---|---|---|---|---|
| Z60 | 60 g/m² | ≈ 30 g/m² / face | Internal / dry, short-life | Internal dry-wall studs, internal HVAC ducting, painted secondary use |
| Z80 | 80 g/m² | ≈ 40 g/m² / face | Internal / mild exposure | Door frames, sheet-metal fabrication, internal cladding, white-goods |
| Z100 | 100 g/m² | ≈ 50 g/m² / face | Mild atmospheric: 10 – 15 years | Light roofing, internal ducting, fabrication, PPGI substrate (entry) |
| Z120 | 120 g/m² | ≈ 60 g/m² / face | Atmospheric: 15 – 20 years | Commercial roofing, PPGI substrate, sandwich panels, fabrication |
| Z180 | 180 g/m² | ≈ 90 g/m² / face | Industrial / coastal: 20 – 30 years | Industrial roofing, PEB envelope, coastal commercial roofing, PVDF substrate |
| Z275 | 275 g/m² | ≈ 137.5 g/m² / face | Heavy industrial / coastal: 30 – 50+ years | Long-life roofing, coastal cladding, infrastructure, premium PPGI |
Certified to international specification.
GI Coils: answered.
Send your gi coils requirement.
Share thickness, width, zinc coating and quantity. We will revert with availability, lead time and pricing within one working day.