PPGI Pre-Painted Galvanized Steel Coil
Premium PPGI color coated steel coil with PE, SMP, HDP, PVDF coatings. RAL color options, 0.12-1.2mm thickness, for roofing, wall cladding, appliances and industrial use.
| Thickness | 0.12 mm – 1.2 mm |
| Width | 600 mm – 1250 mm |
| Zinc Coating | Z40 – Z275 (40–275 g/m²) |
| Top Coat | PE / SMP / HDP / PVDF (15–35μm) |
| Color | Full RAL range, custom colors |
| Standard | JIS G3312, EN 10169, ASTM A755 |
Premium PPGI Pre-Painted Galvanized Steel Coil
High quality PPGI color coated steel coil with PE, SMP, HDP, PVDF coatings, RAL color options, excellent weather resistance and corrosion protection for roofing, wall cladding, appliances and industrial applications.
What Is PPGI Steel Coil?
PPGI (Pre-Painted Galvanized Iron) steel coil, also known as color coated galvanized steel coil, is a cold-rolled steel product that has been hot-dip galvanized and then coated with one or more layers of organic paint.
The manufacturing process applies a primer coat and a top coat (typically polyester, silicone-modified polyester, or fluorocarbon paint) to the galvanized steel substrate through a continuous coil coating line. This creates a product that combines the structural strength of steel with the corrosion protection of zinc and the aesthetic appeal of color paint.
PPGI steel coil is widely used in construction roofing, wall cladding, home appliances, interior decoration, and industrial manufacturing. For global buyers, it offers excellent cost-performance ratio, fast installation, low maintenance, and long service life.
👉 PPGI钢卷表面特写图
Technical Specifications
| Product Name | PPGI Pre-Painted Galvanized Steel Coil / Color Coated Steel Coil |
|---|---|
| Base Metal | Hot-Dip Galvanized Steel (SGCC, DX51D+Z, DX52D+Z) |
| Thickness | 0.12 mm – 1.2 mm |
| Width | 600 mm – 1250 mm |
| Zinc Coating | Z40 – Z275 (40–275 g/m²) |
| Paint System | 2/1 (Top + Back Primer) or 2/2 (Top + Back Full Coat) |
| Top Coat | PE (15–20μm), SMP (20–25μm), HDP (25–30μm), PVDF (25–35μm) |
| Back Coat | Epoxy Primer or Polyester (5–10μm) |
| Color | Full RAL range, custom colors available |
| Surface Finish | Smooth, Wrinkle, Matte, Embossed, Wood Grain, Marble |
| Coil Weight | 3 – 8 Tons or Customized |
| Standard | JIS G3312, EN 10169, ASTM A755 |
For roofing applications in tropical or coastal areas, we recommend PE or SMP coating with Z100+ zinc weight. For premium architectural projects, PVDF coating provides 25+ years of color retention.
Available Coating Systems
Different coating systems offer different levels of durability, weather resistance, and cost. Choosing the right coating depends on your application environment and project budget.
| Coating Type | Thickness | Durability | Best Applications |
|---|---|---|---|
| PE (Polyester) | 15–20μm | 10–15 years | General roofing, interior panels, light industrial |
| SMP (Silicone Modified Polyester) | 20–25μm | 15–20 years | Exterior walls, commercial roofing, tropical regions |
| HDP (High Durability Polyester) | 25–30μm | 20–25 years | Harsh environments, coastal areas, industrial zones |
| PVDF (Fluorocarbon) | 25–35μm | 25–30+ years | Premium architecture, extreme weather, landmark buildings |
Applications of PPGI Steel Coil
👉 PPGI屋面/ 墙面应用图
Construction & Roofing
Corrugated roofing sheets, standing seam roofing, wall cladding, sandwich panels, ceiling tiles, rain gutters, prefabricated steel buildings.
👉 PPGI家电/工业应用图
Appliances & Industrial
Refrigerator doors, washing machine panels, microwave ovens, air conditioner housings, electrical cabinets, garage doors, storage solutions.
PPGI vs PPGL — Which One to Choose?
PPGI uses a galvanized (zinc-coated) substrate, while PPGL uses a galvalume (aluminum-zinc alloy) substrate. Both are color-coated steel products, but they differ in corrosion mechanism and performance characteristics.
PPGI Steel Coil
Zinc substrate provides excellent sacrificial protection at cut edges. Cost-effective, widely available, ideal for general construction and appliances.
PPGL Steel Coil
Aluminum-zinc substrate offers better heat reflectivity and atmospheric corrosion resistance. Preferred for premium roofing in harsh environments.
| Comparison | PPGI | PPGL |
|---|---|---|
| Substrate | Hot-dip galvanized (zinc) | Galvalume (55%Al-Zn) |
| Cut Edge Protection | Excellent (sacrificial zinc) | Good but less at exposed edges |
| Heat Reflectivity | Standard | Superior |
| Atmospheric Corrosion | Good | Better in many environments |
| Cost | More economical | Slightly higher |
| Best For | General construction, appliances | Premium roofing, coastal zones |
Key Advantages of PPGI Steel Coil
- Dual corrosion protection — zinc coating + paint barrier for 20+ years service life
- Rich color selection — full RAL range, custom colors, wood grain and marble effects
- Excellent formability — roll forming, bending, stamping without paint cracking (T-bend ≤2T)
- Low maintenance — self-cleaning surface reduces upkeep costs
- Fast installation — pre-finished surface eliminates on-site painting
- Environmental compliance — VOC-free coatings, recyclable material
Why Choose SunSea Steel?
Stable Quality
Uniform coating, reliable base steel, and consistent surface finish across every order.
Custom Solutions
Any RAL color, custom thickness, coating type, and coil specifications to match your project.
Export Experience
Professional packing, shipping documentation, and delivery coordination for global markets.
Fast Response
Quick quotation, technical support, and sample service for distributors and manufacturers.
Quality Control & Inspection
Surface & Color Inspection
Color consistency, gloss level, coating thickness, and surface defects are checked before packing.
Pre-Shipment Verification
Thickness, width, weight, coating adhesion test, and pencil hardness test before export loading.
Export Seaworthy Packaging
- Inner Protection: Waterproof kraft paper + plastic film
- Outer Cover: Steel sheet protection for handling safety
- Edge Guards: Impact-resistant edge protectors
- Strapping: Steel straps (radial + circumferential)
- Pallet: Wooden or steel pallet support
Shipping & Delivery
Container Shipment
Standard 20GP/40GP container loading for regular orders. FOB, CIF, CFR terms from Tianjin, Shanghai, Qingdao ports.
Break Bulk Shipment
Large volume orders and oversized coils can be shipped via break bulk vessel with professional lashing.
Production lead time 15–25 days. We handle all export documentation and coordinate with freight forwarders for smooth delivery.
Frequently Asked Questions
What is the difference between PPGI and PPGL?
PPGI uses a galvanized (zinc) substrate while PPGL uses a galvalume (aluminum-zinc) substrate. PPGI offers better cut-edge protection and is more economical, while PPGL provides better heat reflectivity.
Which coating system should I choose?
PE coating is suitable for general applications. SMP offers better durability for exterior use. HDP and PVDF are recommended for harsh environments and premium architecture requiring 20+ years of color retention.
Can I get custom RAL colors?
Yes. We can produce any standard RAL color as well as custom colors including metallic, wood grain, marble, and other special effects.
What is the minimum order quantity?
Standard MOQ is 25 tons per color per specification. Smaller trial orders can be discussed based on availability.
Do you provide free samples?
Yes. We can provide free color card samples and small cut samples for quality evaluation before placing orders.
What quality certifications do you have?
Our products comply with JIS G3312, EN 10169, and ASTM A755. ISO 9001 certified factory with SGS/BV third-party inspection available.
How long is the production lead time?
Standard production takes 15–25 days depending on order quantity and specification. Rush orders can be arranged for urgent projects.
Can PPGI be used for roofing in coastal areas?
Yes, but we recommend SMP or HDP coating with higher zinc weight (Z150+) for coastal environments to ensure maximum corrosion resistance and service life.
Looking for a Reliable PPGI Steel Coil Supplier?
Contact SunSea Steel today for competitive pricing, free color samples, technical consultation, and customized PPGI solutions for your construction, appliance, or industrial project.
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