Pre-Painted Galvanized Steel Coil (PPGI)
Cold rolled steel that is hot-dip galvanized, then factory roll-coated with a primer and colored topcoat — the standard buyer choice for metal roofing, wall cladding, sandwich panels and appliance skins.
- Metal roofing sheets and cladding
- Sandwich / insulated panels
- White goods and appliance skins
- Light steel structure envelopes
- Coastal / high-UV markets — consider PPGL (Galvalume base)
- Deep drawing or severe forming — verify T-bend & pencil hardness
- Chemical / industrial exposure — reconsider paint system
- Colour-critical projects — request a signed swatch
Product snapshot
Typical export ranges — always confirm against the final purchase specification.
Ranges shown are typical export references. Actual capability varies by supplier and order — confirm on the final PO specification.
Latest market intelligence
Published market briefs relevant to PPGI. Only real, published data appears here.
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Buyer's guides for PPGI
Published Knowledge Guides mapped to this product.
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Typical specification fields
Use this checklist when preparing your PPGI RFQ.
| Base steel grade | DX51D+Z, DX52D+Z, TDC51D, SGCC-PP |
|---|---|
| Thickness | 0.20 – 1.20 mm (typical export range) |
| Width | 600 – 1250 mm (mill / slit) |
| Zinc coating mass | Z60 – Z275 g/m² (both sides) |
| Paint system | PE (interior), SMP, HDP, PVDF (high-UV / marine) |
| Primer thickness | 5 – 7 µm |
| Top coat thickness | 15 – 25 µm |
| Back coat thickness | 5 – 10 µm |
| Color system | RAL / customer swatch, gloss matte / semi / high |
| Surface film | Optional PE protective film |
| Coil ID | 508 / 610 mm |
| Coil weight | 3 – 10 MT (typical); confirm with mill |
| Tolerance | EN / JIS / ASTM as specified |
| Packaging | Seaworthy export, eye-to-sky or eye-to-wall |
| Applicable standards | EN 10169, ASTM A755, JIS G3312 |
Typical export range — confirm against the final purchase specification.
Applications and selection guidance
Match the paint system and coating weight to the exposure environment.
Roofing sheets
- Choose SMP or PVDF for high-UV markets
- Coating: typically Z100 – Z275 g/m²
- Confirm profile compatibility (trapezoidal, corrugated)
Wall cladding
- PVDF preferred for coastal / architectural facades
- Verify color consistency across batches
- Confirm chalk / fade rating on MTC
Sandwich panels
- Ensure primer compatibility with PU / PIR / EPS core
- Tighter width tolerance for panel line
- Confirm back paint thickness (≥ 5 µm)
Home appliances
- Interior PE finishes acceptable
- Focus on surface defect specifications
- PVC protective film often required
Light steel structures
- Heavier gauge (0.5 – 1.2 mm)
- Prioritize galvanizing weight over paint
- Confirm formability (T-bend) requirements
Verified PPGI suppliers
Only reviewed and approved suppliers mapped to PPGI are shown.
Compare with related products
PPGL Coil
Galvalume (Al-Zn) base — longer corrosion life in coastal and high-UV environments.
Galvanized Steel Coil
The uncoated substrate — chosen when no factory paint is required.
Galvalume Steel Coil
Al-Zn coated bare substrate — premium metal roofing where paint isn't needed.
Cold Rolled Coil
The raw substrate feeding GI/GL/PPGI lines — relevant for integrated buyers.
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