Standard Polyester PPGI Steel Coil – General Construction Grade
Product Overview
Pre-painted Galvanized Steel Coil, universally abbreviated as PPGI, also known as color coated steel or pre-painted steel, is a high-value decorative and protective steel product manufactured by applying liquid paint coatings onto hot-dip galvanized steel substrate through continuous roller coating and baking processes. This standard PE coated DX51D grade is our most widely used entry-level construction specification, optimized for residential and commercial roofing, wall cladding and general light fabrication. It combines reliable corrosion protection of zinc coating with decorative and weather-resistant performance of polyester paint, delivering the most cost-effective solution for large-volume construction projects.
Why Choose CNB Standard PPGI?
As a leading color coated steel manufacturer in North China, CNB operates 3 dedicated PPGI production lines with annual output exceeding 200,000 metric tons. We use world-famous paint brands including Akzo Nobel, Nippon and Becker to ensure consistent color, adhesion and weather resistance. Our PPGI products undergo strict online monitoring of film thickness, gloss, color difference and T-bend adhesion, with each coil fully inspected before delivery. With 20,000 tons of daily ready stock of coated steel products, we guarantee fast delivery and stable supply for long-term construction projects.
Key Specifications、
| Item | Specification |
|---|---|
| Product Name | Pre-painted Galvanized Steel Coil (PPGI) |
| Base Substrate | Hot-dip Galvanized Steel (GI), regular spangle |
| Paint System | Polyester (PE) – Topcoat + Primer + Backcoat |
| Paint Film Thickness | Top 18–20μm / Primer 5–7μm / Back 5–7μm |
| Zinc Coating Mass | Z40 – Z275g/m² (double side) |
| Steel Grade | DX51D |
| Thickness Range | 0.12mm – 1.2mm |
| Standard Widths | 900mm, 1000mm, 1200mm, 1219mm, 1250mm |
| Coil Inner Diameter | 508mm / 610mm |
| Coil Weight | 3MT – 6MT per coil |
| Surface Finish | Glossy / semi-gloss / matte option |
| Color System | Full RAL color range, custom matching available |
| Applicable Standards | ASTM A755, EN 10169, JIS G3312 |
| Typical Service Life | 5–8 years (inland normal environment) |
Core Advantages
- Cost-effective construction solution: Delivers reliable decoration and corrosion protection at the most competitive price point for large-volume projects.
- Excellent formability: DX51D base steel and flexible PE coating support roll forming, corrugating and bending without paint cracking.
- Stable color consistency: World-class paint systems ensure minimal color difference across batches and uniform appearance over full coil length.
- Fast delivery: Large ready stock of standard colors and specifications ensures 7–10 day delivery for construction projects.
- Full export support: Complete export documentation and third-party inspection support for global project requirements.
Applications
This standard PE PPGI coil is predominantly used for residential and commercial roofing sheets, wall cladding panels, corrugated profiles, garage doors, warehouse exteriors, light steel building envelopes and temporary construction facilities. It is also commonly fabricated into decorative panels, ceiling systems and partition walls.
Get a Quotation
We keep large stock of standard construction-grade PPGI coils in popular RAL colors to support immediate trial orders and bulk project shipments. Custom zinc coating weights, paint thicknesses, colors and surface finishes can be arranged to match your specific project requirements. Contact our sales team for a detailed quotation and free sample evaluation.
