PPGI and PPGL zinc color roofing sheets are produced by coating galvanized (PPGI) or galvalume (PPGL) steel sheets with a layer of paint. The base metal is protected by a zinc or aluminum-zinc alloy layer, which prevents corrosion. The paint layer adds an extra level of protection and enhances the aesthetic appeal of the roofing sheets. The production process involves cleaning the steel, applying a conversion coating, adding primer, and finishing with a topcoat of paint, followed by baking to ensure durability and adhesion.


Product NamePPGI PPGL Roofing Corrugated Sheet
TechniqueHot Rolled Cold Rolled
Surface TreatmentGalvanized
Thickness Tolerance±0.01mm
Materialcarbon steel
ApplicationGalvanized steel coils are widely used in chemical, machinery, electronics, electric power, textiles, rubber, food, medical equipment, aviation, aerospace, communications, petroleum and other industrial fields.
MOQ1 ton
Shipment TimeWithin 7 workdays for less 20tons and 10days for less 50tons after receiving deposit or L/C, more 50tons need about 20days.
Export Packing

Waterproof paper, and steel strip packed.

Standard Export Seaworthy Package.Suit for all kinds of transport,or as required

Capacity250,000 tons/year

Available Grade List

Type of base metalSteel GradeGrade of base metalApplication
Hot-dip alu-zinc alloy coatedTDC51D+AZDC51D+AZNomal use
TS550GD+AZ5550GD+AZForhigh-strength structure


Key types of colour-coating include

Polyester (PE): Namely (PE), Good adhesion, rich colors, wide range in formability and outdoor durability, medium chemical resistance, low cost.

Silicon modified polyester (SMP): Namely (SMP), the hardness, abrasion resistance and heat resistance of the coating film are good, as well as good external durability and chalking resistance, gloss retention, average flexibility, and medium cost.

High durability polyester (HDP): Namely (HDP), excellent color retention and UV resistance, excellent outdoor durability and chalking resistance, good paint film adhesion, rich colors, and excellent cost performance.

Polyvinylidene fluoride (PVDF): Namely (PVDF), excellent color retention and UV resistance, excellent outdoor durability and chalking resistance, excellent solvent resistance, good formability, dirt resistance, limited colors, and high cost.


Key features of PPGI and PPGL zinc color roofing sheets include:

  • Excellent Corrosion Resistance: The combination of metallic coating and paint layer provides superior protection against rust and corrosion.
  • Aesthetic Appeal: Available in a wide range of colors and finishes, making them suitable for visible architectural applications.
  • Durability: The multilayer coating system ensures long-term durability and resistance to environmental factors.
  • Formability: Can be easily cut, bent, and shaped for various applications without compromising the coating integrity.
  • Weather Resistance: The paint layer offers protection against UV radiation, moisture, and extreme weather conditions.
  • Low Maintenance: The protective coatings reduce the need for frequent maintenance and repairs.
  • Cost-Effective: Offers a cost-effective solution for roofing with excellent durability and low maintenance requirements.
  • Ease of Installation: Lightweight and easy to handle, which reduces labor and installation costs.
  • Environmental Sustainability: PPGI and PPGL coils are recyclable and can contribute to sustainable building practices.
  • Energy Efficiency: Reflects sunlight, which can help reduce cooling costs in buildings.

Our Certifications

Packaging and Shipping

1. Wood pallet packing cover with water-proof paper
2. Steel pallet packing cover with water-proof paper
3. Wood box packing
4. Steel pallet packing cover with steel box
5. In bundles with steel strip no extra packing

package and shipment


  • High Precision Dimension: The carbon steel profile has excellent processing technology good molding and easy welding. Thickened material, stable performance, and high hardness, not easy to rust.
  • Low Friction: Low dissipation factor. More durable than most ordinary domestic bearings. Lower operating costs​
  • Life Is Long: High-quality steel through strict quality inspection, quality control layer-by-layer detection, and reliable quality, long service life.
  • Customization: Drawings and samples can be processed and customized. Conventional large-scale spot, non-standard customization.
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