PPGL Profile Sheet is an indispensable metal material for building envelope systems, industrial plants and storage facilities. With excellent weatherability, superior corrosion resistance and a wide range of decorative properties, it has become the benchmark choice for high-end metal roof and wall coverings.Wanzhi Group provides cost-effective solutions for architectural and industrial applications.
PPGL Profile Sheet Definition
PPGL: is an abbreviation for Prepainted Galvalume (Steel), meaning “Pre-painted Aluminum Zinc Plated Steel Sheet”.
Profile Sheet: A flat coil that is formed into a sheet with a specific cross-sectional shape (corrugated, trapezoidal, ribbed, etc.) by means of a continuous roll forming process.
PPGL profile sheet: i.e. a color coated metal sheet with a specific cross-sectional shape obtained by roll forming of a pre-painted galvalume steel sheet (PPGL) as a base material. This sheet combines the superior protection of PPGI and Profile Sheet with the decorative/functional, rigid and structural properties of organic coatings.
Core Composition
- Base Plate (Galvalume Steel): Aluminized zinc alloy steel sheet (typical composition: 55% aluminum, 43.4% zinc, 1.6% silicon).
- Chemical Conversion Layer: Typically chromated or chrome-free.
- Primer: Epoxy or polyester based primer.
- Topcoat: Polyester/Polyvinylidene fluoride, key layer providing color, gloss, primary weathering and specific functionality.
Substrate & Specification
Wanzhi Group produces and customizes PPGL profile sheet with various specifications, supporting customization of substrate, plating, strength, coating and sheet.
Substrate specifications
- Thickness: Common range 0.15mm – 1.0mm (Mainly used for building walls: 0.45mm, 0.50mm, 0.60mm).
- Width: Standard roll widths are typically 600mm – 1250mm. effective cover widths are less than the raw material width.
Coating weight common grades
- AZ100 (100g/m²): Lightly corrosive environments or indoors.
- AZ150 (150g/m²): the most common standard, balancing performance and cost.
- AZ180 (180g/m²) / AZ200 (200g/m²): Higher protection requirements.
Substrate strength Grades
- Commercial grades: e.g. DX51D+AZ, CS Type B. Good formability, standard strength (yield strength ≥140 MPa).
- Structural grades/high strength steels: e.g. DX52D+AZ, DX53D+AZ, HX220PD+AZ, HX300LAD+AZ (yield strength 220-300+ MPa). For large spans, high wind pressure, and load bearing areas.
Coating specifications
- Front side coating type: PVDF > SMP/HDP > PE.
- Front side coating thickness: usually 10μm – 40μm.
- Backside Coating Type and Thickness: Typically PE, 5μm – 20μm.
- Color and Gloss: Extremely wide range of standard color cards (RAL, Pantone, etc.), customization supported. Gloss can be high gloss (≥70%), semi-matte (30-50%), matte (≤25%).
Specification after molding
- Profile: Corrugated, trapezoidal, sinusoidal, etc.
- Wave height (Depth): Common range 15mm – 75mm+, from the height of the wave valley to the height of the wave peak.
- Pitch: Distance between neighboring crests.
- Cover Width: Typical range 600mm – 1050mm, the actual width covered by a single sheet of molding when installed.
- Length: Usually customized (≤12m, subject to transportation constraints) or cut-to-length.
PPGL Profile Sheet Types and Characteristics
The versatility of PPGL profile sheets is largely reflected in their wide range of sheet types. Choosing the right profile is crucial for functionality and aesthetics.
Roof Profile
Standing Seam Sheet:
- Characteristics: Ribs are high (usually >60mm), and adjacent panels are fastened on-site along the length of the standing seams by a special seaming machine. No roof penetration.
- Advantage: Super waterproof and windproof, no penetration, modern and beautiful, free expansion and contraction.
- Application: Suitable for large-span, complex modeling roofs.
- Representative models: 65mm high vertical ribs, scalloped boards, etc.
High Rib / Trapezoidal Sheet:
- Characteristics: Wave height is usually 25mm – 75mm, trapezoidal cross-section, wide wave crest.
- Advantage: High load bearing, fast drainage, high stiffness, economical and practical
- Application: Suitable for industrial plants and warehouses with large span.
- Representative models: V-840 (wave height 40mm), YX25-210-840 (wave height 25mm), YX51-380-760 (wave height 51mm) and so on.
Low Rib / Corrugated Sheet:
- Characteristics: Wave height usually 15mm – 30mm, classic wave or small trapezoidal shape.
- Advantages: most economical, lightweight and quick to install.
- Application: For simple warehouses, fences, walls.
- Representative models: V-125 (wave height 18mm), small corrugated board (wave height 16-20mm), etc.
Wall Panel Type
Concealed Fastening Sheet:
- Characteristics: Screws are fixed in the hidden part of the board ribs or under the edge of the overlap, so that the nail heads cannot be seen from the outside.
- Advantages: Clean and nail-free appearance, good waterproofing, beautiful.
- Application: Commonly used in commercial buildings, high-end factory walls.
- Representative models: concealed fastening type, plug-in interface type, etc.
Exposed Fastening Sheet:
- Characteristics: Screws are fixed directly through the crest of the board, nail heads are exposed (usually with waterproof washers).
- Advantage: Lowest cost and easiest to install.
- Application: Suitable for walls and internal partitions in industrial buildings with low aesthetic requirements or limited budget.
- Representative models: YX15-225-900, YX25-210-840, etc.
Antique Tile/Special Effect Panel
- Characteristics: The three-dimensional texture effect of imitating traditional ceramic tile, wood grain, stone, etc. is pressed by special roller type.
- Advantage: Strong decorative and unique style.
- Application: Commonly used in villas, cultural and tourism projects, commercial street exterior walls.
- Representative types: Spanish tile, Roman tile, wood grain board, stone grain board, etc.
Main Sheet Type Application
| Panel Type | Typical Wave Height (mm) | Typical Applications |
| Standing Seam Roof | 60-75+ | Airports, sports halls, high-end factories, commercial center roofs |
| High Wave Trapezoidal Roof | 35-75 | Large industrial factories, logistics warehouses, workshop roofs |
| Low Wave/Wavy Panel | 15-30 | Simple sheds, fences, temporary facilities, interior walls, ceilings |
| Concealed Wall Panel | 25-40 | Commercial buildings, office buildings, high-end factory exteriors |
| Exposed Wall Panel | 15-35 | Regular industrial factories, warehouses, equipment room interiors and exteriors |
| Antique Tile/Special Type | 25-50 | Villas, hotels, cultural tourism projects, commercial street exteriors |
PPGL Profile Sheet Surface Treatment
PPGL profile sheet’s excellent performance is dependent on its fine surface coating treatment. Common PPGL prepainted steel surface treatment includes coating structure, coating material, surface texture and so on. Depending on the application, a variety of coatings are available.
Standard Coating Structure
- 2/1M: 2 layers (primer + topcoat) on the front side and 1 layer (backcoat) on the back side. Most common.
- 2/2M : 2 coats on the front and 2 coats on the back (primer + back coat). Provides better backside protection.
- DUCO : Same paint and thickness on both sides. Used in corrosive environments or when consistent appearance/protection is required on both sides (e.g. open ceiling, partitions).
Functional Coatings
- HIGH REFLECTIVE/COLD ROOF COATINGS: Light-colored (especially white) PVDF or SMP coatings with high solar reflectance (SR) and high thermal emittance (Em).
- Self-cleaning coatings: PVDF coatings or topcoats with special additives.
- Antimicrobial coatings: Coatings with antimicrobial agents such as silver ions.
- Heat-insulating coatings: Addition of heat-insulating fillers to primers or topcoats.
- Scratch- and abrasion-resistant coatings: Specially formulated topcoats (e.g. highly cross-linked polyester).
Surface Textures
- Smooth surface: Standard surface.
- Suede/Matte finish: Special treatment to reduce gloss.
- Embossed/Embossed Surfaces: Mimics wood grain, leather, etc.
Advantages of PPGL Profile Sheet
Core Application – PPGL Profile Sheet
PPGL profiles sheets are used in a wide range of applications where protection, longevity and appearance are important, e.g. in building roofing systems, building wall systems, building interiors, special buildings and structures.
High-end industry and logistics: large-scale factories, warehouses, distribution centers (commonly used high wave plate, vertical locking edge).
- Commercial and public buildings: villas, hotels, cultural and tourism projects, commercial street facades, shopping centers, stadiums, exhibition centers, airport terminals, schools, hospitals.
- Transportation facilities: high-speed railway station, subway station, bus hub.
- Exterior wall: industrial plant, commercial building, office building, agricultural building.
- Interior wall: workshop partition, clean room wall, decorative wall.
- Ceiling: open ceiling, closed ceiling .
- Partition: Office, shopping mall, exhibition hall partition.
- Cold storage: internal and external walls and roofs .
- Clean room: wall panels, ceiling (antibacterial, easy to clean coating).
- Sound barriers: Highway and railroad noise walls.
- Renovation works: Ideal material for roof and wall renovation and covering of old buildings.
PPGL Profile Sheet vs. PPGI Profile Sheet
PPGI PPGL steel are structurally similar (substrate + coating + molding), with the core difference being the metal plating of the substrate (GI GL): PPGL outperforms PPGI across the board in terms of protection (corrosion and heat resistance) and longevity, while PPGI has a significant advantage in terms of cost and certain deep-draw molding scenarios.
| Property | PPGL (Aluminum-Zinc Coated) Profiled sheet | PPGI (Zinc Coated) Profiled Panel |
| Substrate Coating Composition | 55% Al, 43.4% Zn, 1.6% Si | ≥99% Zn |
| Core Advantages | Ultra-high corrosion resistance, excellent heat resistance, very long lifespan | Cost-effective, excellent formability (especially deep drawing) |
| Corrosion Resistance | Extremely high | Good |
| Heat Resistance | Long-term 315°C | About 200°C, prone to alloying and brittleness at high temperatures |
| Scratch/Edge Protection | Al₂O₃ barrier + Zn sacrificial protection | Zn sacrificial protection |
| Coating Adhesion | Very good | Very good |
| Formability | Good | Excellent |
| Cost | Higher | Lower |
| Applications | High-end construction, harsh corrosion/high-temperature environments, projects requiring extremely long lifespan | Economical buildings, mild environments, short-term projects, complex deep drawing forming needs |
Wanzhi Group Customized Service
Wanzhi Group is a leading PPGL supplier and profile processing factory in China. We can provide PPGL Profile Sheet OEM ODM service.
Customized Process – PPGL Profile Sheet
Communication of requirements (color/profile/performance) -> Technical feasibility assessment and proposal confirmation -> Mold design/sampling (if required) -> Formal quotation -> Contract signing -> Production scheduling (Substrate production -> Color Coating -> Pressing) -> Strict QC -> Packaging and shipping.
Scope of Customization
- Customized substrates: special thicknesses/widths
- Ultra-high-strength substrates: steel plates for special load-bearing structures with a yield strength of ≥550 MPa.
- Special plating requirements: extra thick plating above AZ150.
- Special surfaces: Finished substrates.
- Customized coating systems: exclusive colors, backside paint upgrades, functional coatings, special coating types, surface textures.
- Customized plate shapes: adjustment of wave heights, wave spacing, rib shapes, etc.
- Customized presswork: special lengths, cut-outs/openings, end blocking, etc.
PPGL Profile Sheet, combining the extraordinary corrosion resistance, mechanical properties, aesthetics, structural strength, advantages of steel and coatings, with applications ranging from building enclosure to industrial production, has become one of the indispensable metal materials in our life. Contact us to get the price of your favorite steel.