Libya 56 tons PPGI Coils Project

Good news! The Libyan client purchased our PPGI coils again. In March 2023, this customer bought 56 tons of RAL9016 PPGI coil from Wanzhi Steel. When they received our coils, they were satisfied with the quality of the coils. And on July 27, 2023, the Libyan customer second time purchased 56 tons of RAL 9016 color-coated coils. The PPGI coils were shipped to Libya on August 11, 2023.

PPGI coil overview

PPGI rolls are color-coated coils that use galvanized steel as the base material. It is mainly used to produce corrugated roofing sheets and is widely used in construction, home appliances, automotive upholstery, etc. RAL 9016 PPGI coils are hot-selling in the metal market because of their beautiful appearance, corrosion resistance, and competitive price.

Project Production

1. Substrate Preparation: Select cold-rolled or hot-rolled steel coils and perform surface pretreatment, such as degreasing and rust removal, to ensure cleanliness.
2. Primer Application: Apply primer to the pretreated substrate surface and allow it to cure by drying to enhance adhesion and corrosion resistance.
3. Topcoat Application: Mix a topcoat according to the RAL9016 (pure white) color and apply it evenly over the primer layer. Bake and cure to form a coating.
4. Post-Processing: The finished color-coated steel coils are inspected, slit, packaged, and stored.

Why Is RAL9016 Popular？

RAL 9016 is one of the color numbers in the RAL (German Industrial Color Standard) color card; the color is 9016 Traffic white.
RAL is the German industry (DIN) color standard color card, a German color card brand. This color card is widely used in the world, also known as RAL international color card, Chinese translation: Raul color card. Mainly used in paint, paint, plastic, hardware, chemical, ceramic, and industrial design, it is commonly used in industry color. Wanzhi can provide you with all RAL colors.

Quality Inspection Department

Zinc Coating Thickness

When purchasing color-coated galvanized steel sheets, the thickness of the zinc coating is a key consideration, as it determines corrosion resistance. You can choose a thickness higher or lower than the standard. Thin coils 3mm or less have a smooth surface, making it difficult to achieve a thicker coating. A mismatch between the zinc coating and the steel thickness can affect the coating’s adhesion to the substrate and its appearance. Excessively thick coatings can result in a rough, flaking coating, and the coated parts will be less resistant to impact during handling and installation.

Project packaging and transportation

PPGI Coils Supplier–Wanzhi Factory

Wanzhi Steel Group is a leading steel manufacturer in China, specializing in color-coated coils, color-coated aluminum-zinc coils, corrugated roofing panels, and office boards. With three color-coating and two hot-dip galvanizing lines, our products are exported to over 120 countries and regions. Our professional engineers can assist you in selecting the appropriate zinc coating and thickness, and our sales staff is available 24 hours a day. If you are interested, please inquire for a quote and visit our factory!

3 Tips for Problems When Handling and Using Pre-Painted Galvanized Coils

1. Damage

Surface scratches may occur during transportation or use. Repairs can be made with the same type of paint, preferably the same color if the paint is consistent. Allow to cure at room temperature after application. Repairs require professional assistance, using appropriate methods based on the severity of the damage.

2.  Chromatic Aberration

Wanzhi’s factory strictly controls paint color during production to ensure consistency. However, slight color variations may occur due to differences in paint batches, production times, and factories, but these do not affect quality. During construction, it is recommended to use pre-coated panels produced by the same manufacturer and at the same time to avoid color variations. Pre-coated panels can also discolor due to prolonged exposure to wind and sun.

3. Coating Pulverization

In outdoor environments, exposure to sunlight, ultraviolet rays, rain, and fog can cause the coating on pre-coated galvanized steel coils to change, sometimes causing it to flake off with touch. This is called powdering, a normal phenomenon that occurs over time, even for high-quality pre-coated steel. The rate of powdering varies across regions, with coastal areas experiencing faster powdering due to the high salt content of the air. Repainting is recommended if powdering occurs.

Customer Feedback

The white color-coated coils you provided performed exceptionally well in Tripoli’s high temperatures and strong sunlight. Even after 18 months of use, they retained their pristine whiteness without fading, fully meeting our stringent weather resistance requirements.

—Ahmed Al-Mansouri, Project Manager at a Libyan construction company

If you are interested in PPGI Coil, please contact us. Customized colors are available.