Prepainted Metal Coil Sheet
A Reliable Choice for Building Envelope Systems
We specialize in the production of PPGI pre-painted galvanized steel, PPGL pre-painted aluminum-zinc steel , and PPAL pre-painted aluminum coils. We offer the full RAL color range and provide slitting and profiling services. We determine material specifications based on project-specific environmental requirements, providing one-stop supply—from coils to finished panels—for building materials such as roofing, wall cladding, sandwich panels, and curtain walls.
15+ years
Industry Experience
600,000 tons
Annual Production Capacity
200+
Exporting Countries
7 days
Standard Order Delivery
Applications in the Construction Materials
Pre-painted steel for the construction industry! From industrial plants to residential buildings, color-coated coil steel has become the mainstream choice for building envelopes thanks to its lightweight, durable, and colorful properties.
Profiled Metal Roofing Panels
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Used in Color-Coated Sandwich Panels
EPS foam, polyurethane, or rock wool is sandwiched between two layers of pre-coated metal sheets and laminated into a single panel. Used in cold storage facilities, cleanrooms, and temporary structures.
Exterior Wall Cladding and Enclosure Panels
Installed vertically or horizontally on the exterior of steel structural beams and columns, replacing traditional brick walls and paint.
Metal Roll-Up Doors and Garage Doors
Steel coils are first slitted lengthwise into narrow strips, then rolled into slats or door panels.
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Suspended Ceilings & Ceiling Panels
Manufactured as linear or square panels, or interlocking panels, for use in office buildings, shopping malls, and hospital corridors.
Building Accessories
Finishing components for roof joints—ridge tiles, eave edging, window sills, inside and outside corners, gutters, and downspouts.
Color-coated steel coil series (PPGI/PPGL/PPAL)
Three main substrates are available. Choose the most suitable substrate based on different corrosion environments and budget requirements. The best choice depends on the project’s corrosion environment, design life, and processing method.
Four Delivery Formats—Choose the One That Fits Your Needs
From full coils to slit coils, and from flat sheets to profiled sheets, we supply products tailored to your processing methods and on-site construction practices.
Color-coated steel coils
Supply in whole coils, inner diameter 508mm/610mm, suitable for customers with on-site forming or their own processing lines.
Color Coated Profile Sheet
Pressed into various tile shapes (840, 900, 820, etc.) at the factory, then shipped directly to the construction site for installation.
Color-Coated Flat Sheets
Cut to the specified length into flat panels for use in secondary processing, door panels, ceiling panels, and other applications requiring flat surfaces.
Color Coated Steel Strip
Cut into strips longitudinally to the required width for narrow strip processing such as door frames, edging, keels, and roller shutters.
Available Specifications
The following is the standard production range. Please contact sales to confirm special specifications.
| Item | PPGI | PPGL | PPAL |
| Substrate Type | Hot-dip galvanized steel coil | Hot dip aluminum zinc steel coil | Aluminum Coils |
| Thickness Range | 0.12–1.2 mm | 0.12–1.2 mm | 0.20–1.0 mm |
| Effective Width | 600–1250 mm | 600–1250 mm | 600–1250 mm |
| Coating/Grade | Z30–Z275 g/m² | AZ30–AZ150 g/m² | H14 / H24 temper |
| Coating Type | PE / SMP / HDP / PVDF | PE / SMP / HDP / PVDF | PE / PVDF |
| Paint Film Thickness | Front side 15–25μm / Back side 5–10μm | Front: 15–25 μm / Back: 5–10 μm | Front: 18–25 μm / Back: 8–10 μm |
| Anti-corrosion Principle | Zinc-coated sacrificial anode protection | Aluminum barrier + zinc edge protection | Aluminum oxide passivation barrier + rust-free aluminum substrate |
| Corrosion Resistance | Good: Suitable for general environments | Excellent: 3–6 times that of PPGI | Moisture and heat resistant, marine environmentally friendly |
| Density | Approx. 7.85 g/cm³ | Approx. 7.85 g/cm³ | Approx. 2.7 g/cm³, lightweight |
| Color Standard | RAL color chart full range or custom-made to customer specifications | ||
| Coil Inner Diameter | 508 mm or 610 mm | ||
| Single Coil Weight | 3–8 tons/coil (can be split into coils upon request) | ||
| Corrugated Sheet Type | 840 / 900 / 820 / 750 / Corrugated / Sandwich panel surface layer, etc. | ||
Why the Construction Industry Chooses Pre-painted Metal Coils
Weather Resistance and Color Retention
The HDP/PVDF system ensures long-term aesthetic integrity.
PVDF fluorocarbon coatings retain their color for over 20 years, while PE coatings remain stable for 10 years, eliminating the need for periodic repainting required for painted walls.
Lightweight
Lightweight yet high-strength, reducing structural components.
The panels are lightweight—weighing only 1/30th of a traditional brick wall—which directly lowers the cost of beams, columns, and foundations, benefiting large-span industrial buildings in particular.
High Construction Efficiency
No on-site painting required.
Coiled sheets are delivered to the site and proceed directly to forming and installation, reducing scaffolding requirements, paint storage needs, and the impact of weather on the painting process.
Coating Consistency
Rich color options for an attractive exterior.
Surface options—including RAL color systems, matte, high-gloss, textured, and metallic finishes—allow the building envelope system to enhance decorative appeal while fulfilling functional requirements.
Environmentally Friendly and Recyclable
Both steel and aluminum are recyclable.
Used metal panels are 100% recyclable, and the materials retain their residual value even after project demolition, meeting construction projects’ requirements for material recyclability.
Low Maintenance Costs
Choose the right material once to minimize future rework.
In highly corrosive environments, the material’s inherent corrosion resistance is more cost-effective than subsequent repairs. Using the right combination of substrate and coating eliminates the need for frequent maintenance, resulting in lower life-cycle costs.
Why Choose Us?
Located in Boxing County, Shandong Province, our factory has been in operation for over 15 years. We have our own roller coating production line, along with forming, slitting, shearing, and laminating equipment, which can supply coil, sheet, and strip products, saving you procurement time and costs.
- Qualification Certification: ISO, CE, SGS (see our SGS report), Trusted Supplier certifications, etc.
- Strict testing procedures: incoming substrate inspection, online testing, and finished product sampling inspection (bending, T-bending, impact performance, pencil hardness, salt spray test, etc.).
- Each roll is traceable: the roll number is linked to the production batch, testing data, and operator, and a response is provided within 24 hours in case of problems.
Export standard packaging
Steel coils pack
Steel coils include upright and horizontal packages. The packaging of steel coils, from the inside out, includes vapor phase corrosion inhibitor paper (VCI paper), cardboard protective ring, waterproof kraft paper + inner film bag, galvanized thin steel plate, steel strapping, and wooden pallet.
Steel Sheets pack
Sheet packaging includes vapor phase inhibitor (VCI) paper + plastic film, galvanized sheet steel, corner protectors, outer steel strapping for securing, and a wooden pallet.
