PPGI Color Coated Steel Coil
PPGI (Prepainted Galvanized) steel coil with a wide range of RAL colors and paint systems (PE, SMP, HDP, PVDF). Thickness 0.12-1.2mm, width 600-1250mm. Ideal for roofing, cladding, and appliances. Mill Test Certificate provided.
| Material | Prepainted Hot-Dip Galvanized Steel (GI Substrate) |
|---|---|
| Grade / Standard | TDC51D+Z / CGCC / DX51D+Z |
| Thickness | 0.12mm - 1.2mm |
| Width | 600mm - 1250mm |
| Inner Diameter (ID) | 508mm / 610mm |
| Coil Weight | 3-6 Tons |
| Delivery Condition | hot_rolled / cold_rolled / as_rolled |
| Surface Treatment | bare / painting / coated |
| MOQ | 5 Tons per color |
| Delivery Time | 15-30 Days |
| Loading Port | Tianjin / Shanghai / Qingdao |
Overview of PPGI Color Coated Steel Coil
PPGI (Prepainted Galvanized Iron) steel coil is a value-added product consisting of a galvanized steel (GI) substrate that is pre-treated, primed, and coated with one or more layers of organic paint on a continuous coil-coating line. This process creates a durable, versatile, and aesthetically pleasing material that combines the strength and corrosion resistance of galvanized steel with the decorative flexibility of paint. Specified under standards like JIS G3312, EN 10169, and ASTM A755, PPGI coil eliminates the need for post-fabrication painting, offering significant cost and time savings.
The paint system typically includes a primer and a topcoat, with options for a backer coat. A wide range of paint types are available, including Polyester (PE), Silicon Modified Polyester (SMP), High-Durability Polyester (HDP), and Polyvinylidene Fluoride (PVDF), each offering different levels of durability, UV resistance, and color retention. With a vast spectrum of colors available in the RAL system, PPGI coil is the go-to material for modern construction, home appliances, furniture, and transportation industries.
Key Features and Paint Systems
The performance of PPGI coil is defined by its multi-layer coating system. It starts with a high-quality hot-dip galvanized (GI) steel substrate. A pre-treatment layer enhances paint adhesion, followed by a corrosion-resistant primer. The final topcoat determines the color, gloss, and environmental resistance. Standard paint systems include:
– **Polyester (PE):** The most common and cost-effective option, offering good formability and a wide color range. Ideal for interior applications and moderate exterior environments. Typical warranty: 5-10 years.
– **Silicon Modified Polyester (SMP):** Enhanced with silicon for better durability and gloss retention than standard PE. Good for general exterior use like roofing and cladding. Typical warranty: 10-15 years.
– **High-Durability Polyester (HDP):** Offers superior color retention and chalking resistance compared to SMP, approaching the performance of PVDF at a lower cost. Excellent for high-end construction. Typical warranty: 15-20 years.
– **Polyvinylidene Fluoride (PVDF):** The premium choice, offering exceptional resistance to UV radiation, chemicals, and weathering. It maintains color and gloss for decades, making it ideal for monumental architecture and harsh environments. Typical warranty: 20+ years.
Coils can be supplied with a protective plastic film to prevent scratches during fabrication and installation. Finishes are available in various gloss levels (matte, low-gloss, high-gloss) and textures (smooth, wrinkled, embossed).
Main Applications of PPGI Steel Coil
PPGI coil is used extensively across numerous industries due to its combination of aesthetics, durability, and formability. In the construction sector, it is roll-formed into roofing sheets, wall cladding, sandwich panels, insulated panels, gutters, downspouts, and metal doors. Its consistent color and finish make it ideal for creating uniform and visually appealing building exteriors.
The home appliance industry uses PPGI for refrigerator and freezer door panels, washing machine and dryer casings, microwave oven exteriors, and air conditioner housings. In commercial interiors, it is used for ceiling grids, office partitions, shelving, and furniture. The transportation industry uses it for the interior panels of buses, trains, and ships. Other applications include whiteboards, electrical enclosures, and decorative panels.
Why Choose Us for PPGI Color Coated Coil
Shandong Tanglu Metal Material Co., Ltd. is a premier supplier of high-quality PPGI coils. We use premium hot-dip galvanized (GI) steel substrates from top-tier mills to ensure superior corrosion resistance. Our advanced, high-speed coil coating lines use paints from world-renowned brands like Beckers, Valspar, and KCC, guaranteeing vibrant and long-lasting colors. Every batch of PPGI coil undergoes rigorous quality control tests, including color matching (Delta-E), gloss measurement, paint thickness checks, T-bend tests for adhesion, pencil hardness, and salt spray tests for corrosion performance.
We offer a full spectrum of RAL colors and can develop custom colors to meet your project’s specific needs. With a wide range of paint systems (PE, SMP, HDP, PVDF), thicknesses (0.12mm-1.2mm), and widths (600-1250mm), we can provide the perfect solution for your application. Our extensive export experience to over 80 countries ensures reliable logistics and service. Each coil is shipped with a detailed Mill Test Certificate (MTC) and can be supplied with a protective film for a scratch-free delivery.
📐 Dimension & Size Table
| Thickness (mm) | Width (mm) | Paint System | Base Metal (GI) |
|---|---|---|---|
| 0.12-0.25 | 600-1250 | PE | Z40-Z80 |
| 0.25-0.40 | 600-1250 | PE, SMP | Z60-Z120 |
| 0.40-0.60 | 600-1250 | PE, SMP, HDP | Z80-Z180 |
| 0.60-0.80 | 600-1250 | HDP, PVDF | Z100-Z275 |
| 0.80-1.20 | 600-1250 | PVDF | Z120-Z275 |
* Custom sizes available upon request. Tolerances per relevant international standards.
🔬 Chemical Composition
| Element | Min | Max | Display Value | Note |
|---|---|---|---|---|
| C | - | 0.12 | ≤0.12 | Base Metal: DX51D per EN 10346 |
| Si | - | 0.50 | ≤0.50 | Base Metal |
| Mn | - | 0.60 | ≤0.60 | Base Metal |
| P | - | 0.10 | ≤0.10 | Base Metal |
| S | - | 0.045 | ≤0.045 | Base Metal |
* Chemical composition may vary by heat, thickness and specification. Please refer to the actual mill test certificate.
⚙️ Mechanical Properties
| Property | Value | Unit | Test Condition |
|---|---|---|---|
| Tensile Strength | 270-500 | MPa | Base metal properties |
| Yield Strength | ≤500 | MPa | Base metal properties |
| Elongation | ≥22 | % | Base metal properties |
| Top Coat Paint Thickness | 15-25 | μm | Standard PE/PVDF top coat |
| Primer Thickness | 5-7 | μm | Standard epoxy/polyurethane primer |
| T-Bend Test | 0T - 3T | No cracking or peeling | |
| Pencil Hardness | ≥HB | ASTM D3363 | |
| Salt Spray Test (PE) | ≥500 | hours | ASTM B117, neutral |
| Salt Spray Test (PVDF) | ≥1000 | hours | ASTM B117, neutral |
* Values shown are minimum requirements unless otherwise stated.
📦 Commercial Information
| Packaging | Standard seaworthy export packing for PPGI coils. Each coil is wrapped with waterproof paper and PE film, with hardboard edge protectors on inner and outer edges. A full outer steel shell provides maximum protection. The coil is placed 'eye to sky' or 'eye to wall' on a wooden pallet and securely strapped with steel bands. Each package is clearly labeled with product details including color, paint type, and specifications. |
|---|---|
| Payment Terms | T/T (Telegraphic Transfer),L/C (Letter of Credit) |
| Price Term | FOB,CFR,CIF,EXW |
| Supply Capacity | 20,000 Tons/Month (PPGI & PPGL) |
| Loading Port | Tianjin / Shanghai / Qingdao |
Why Choose Our PPGI Color Coated Steel Coil?
Vibrant Colors & Finishes
Available in the full RAL color spectrum and custom-matched colors. Choose from a variety of finishes including high-gloss, matte, wrinkled, and printed patterns like wood grain, brick, and camouflage.
Durable Paint Systems
Select from multiple paint systems—Polyester (PE), SMP, HDP, and PVDF—with warranties ranging from 5 to over 20 years to match your project's budget and environmental requirements.
Superior Adhesion & Formability
Excellent T-bend test results (0T to 3T) ensure the paint layer adheres perfectly without cracking or peeling during roll-forming, bending, and other fabrication processes.
Robust Corrosion Protection
Built on a high-quality hot-dip galvanized (GI) steel substrate (Z40-Z275), providing a strong first line of defense against corrosion before the paint system is even applied.
Protective Film & QC Guaranteed
Optional self-adhesive protective film prevents scratches and damage during transport and installation. Every coil is delivered with a Mill Test Certificate detailing all quality parameters.
🏭 Applications of PPGI Color Coated Steel Coil
PPGI color coated steel coil is the ultimate material for applications requiring both aesthetics and performance. In construction, it is roll-formed into durable and attractive roofing sheets, wall cladding, and sandwich panels for industrial, commercial, and residential buildings. The home appliance industry relies on PPGI for creating the sleek, colorful exteriors of refrigerators, washing machines, and microwaves. It is also used extensively in interior design for false ceilings, partitions, and modular furniture. Its excellent formability allows it to be shaped into complex components for vehicle interiors, HVAC systems, and metal doors, providing a finished, corrosion-resistant surface right from the start.
📋 Quality & Certification
Our Certifications
- ✅ ISO 9001:2015
- ✅ CE Marking
- ✅ SGS Certified
Mill Certificate Type
- 📋 EN 10204 3.1
- 📋 Original Mill Certificate
- 📋 Third Party Inspection Available
❓ Frequently Asked Questions
What is PPGI steel coil?
PPGI stands for Prepainted Galvanized Iron. It is a steel coil with a hot-dip galvanized (GI) steel base that has been coated with layers of paint on a continuous coil-coating line. This process provides both excellent corrosion resistance from the zinc layer and a durable, decorative colored finish from the paint.
What is the difference between PPGI and PPGL?
The main difference is the substrate. PPGI uses a Galvanized (GI) steel substrate, which is coated with zinc. PPGL (Prepainted Galvalume) uses a Galvalume (GL) steel substrate, which is coated with a 55% aluminum-zinc alloy. PPGL offers superior corrosion resistance and a longer service life than PPGI, making it a more premium option, especially for harsh coastal or industrial environments.
What is the difference between PE, SMP, HDP, and PVDF paint?
These are different types of topcoat paint with varying levels of durability and cost:
- **PE (Polyester):** Most common, cost-effective, good for general indoor/mild outdoor use.
- **SMP (Silicon Modified Polyester):** Better durability and gloss retention than PE.
- **HDP (High-Durability Polyester):** Excellent color retention and durability, a good mid-point between SMP and PVDF.
- **PVDF (Polyvinylidene Fluoride):** The highest performance paint, offering outstanding UV and chemical resistance. Ideal for long-life architectural projects in harsh environments.
What does a '0T' T-bend test result mean?
The T-bend test measures the paint's flexibility and adhesion. A '0T' (zero-T) result means the steel can be bent 180 degrees back on itself with no radius (the tightest possible bend) without any cracking or peeling of the paint film. This indicates extremely high quality and excellent paint adhesion, crucial for complex forming operations.
Can I order a custom color not in the RAL chart?
Yes. While we offer all standard RAL colors, we can also perform custom color matching. You can provide a physical color sample or a Pantone code, and our technical team will create a matching formula for your project. This typically requires a minimum order quantity.
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PPGI Color Coated Steel Coil
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