Pre-painted Galvanized Steel Coil/PPGI

• Pre-painted galvanized steel coil, commonly known as PPGI steel coil, is a versatile and high-performance building material that combines the strength of steel with the beauty of color coatings. One of its most remarkable advantages is its superior corrosion resistance. The galvanized layer protects the steel from rust and oxidation, while the additional paint coating forms a second barrier against environmental elements like moisture, chemicals, and UV radiation. This dual protection ensures excellent durability, even in harsh outdoor conditions, making PPGI coils ideal for roofing, wall panels, and other exposed applications.

  
  

• Another major benefit of PPGI coils is their aesthetic appeal and design flexibility. Available in a wide range of colors, textures, and finishes, they allow architects and designers to create visually striking and modern structures. Whether you prefer a glossy, matte, or metallic look, pre-painted steel coil can meet diverse style preferences without compromising performance. The pre-painting process also ensures a uniform, smooth, and long-lasting color finish that resists fading, peeling, and chalking over time — keeping buildings looking fresh for years.

  
  

• In addition to aesthetics, PPGI coils offer excellent formability and easy processing. Thanks to their high-quality coating and consistent surface, they can be easily cut, bent, or roll-formed into various shapes without cracking or losing adhesion. This makes them ideal for use in a wide range of industries, from construction and automotive to home appliances and furniture manufacturing. Their lightweight nature also simplifies handling and installation, helping reduce labor costs and construction time.

  
  

• Finally, pre-painted galvanized steel coils are known for their eco-friendliness and cost efficiency. The pre-painting process minimizes waste and eliminates the need for on-site painting, reducing environmental pollution. Their long lifespan and minimal maintenance requirements further contribute to lower long-term costs. In short, PPGI coils combine strength, beauty, and sustainability — offering a smart, durable, and stylish solution for modern industrial and architectural applications.

• Construction Sector: Roofing and wall cladding (sandwich panels/single sheets) for large industrial plants, commercial complexes, stadiums.

• Home Appliances: Refrigerators, washing machines, microwaves, water heaters, and other appliance housings.

• Interior Decoration: Ceilings, partition walls, elevator car interiors.

• Transportation: Ship bulkheads, RV interior panels.

PPGI is manufactured on a coil coating line. The substrate (galvanized or Galvalume coil) is uncoiled, cleaned, and chemically pretreated (e.g., chromate or zirconium conversion coating). A primer is applied by reverse roller coating and cured in an oven at Peak Metal Temperature (PMT) of 200–230°C. Then, a top coat (polyester, siliconized polyester, PVDF, etc.) is applied and cured similarly. The coated coil is cooled and may be laminated with a protective film. The entire process is controlled to ensure coating thickness, adhesion (cross-cut test ≥ T1), and mechanical properties (bend, impact). Custom colors and gloss levels are achieved by selecting appropriate paint systems.

Our pre-painted coils strictly adhere to rigorous standards such as AAMA 2603, AAMA 2604, AAMA 2605. We conduct a full set of tests on coating thickness, adhesion (cross-cut test), hardness, impact resistance, salt spray resistance, and UV resistance (QUV) to ensure product quality.

We provide comprehensive customization services:

• Slitting to specified weights

• Longitudinal Cutting/Slitting to precise widths

• Cut-to-length (cutting coils into pre-painted sheets)

• Any color customization (provide color chart or Pantone code)

• Selection of different coating systems and film thicknesses

• Different colors or coatings on one side/both sides

Pre-painted coils receive the most meticulous packaging: surfaces are covered with a protective film, interleaved with paper sleeves, wrapped externally with waterproof materials, and placed vertically on specialized cradles, ensuring zero damage to the delicate coated surface during transportation and handling. We work with professional and reliable logistics partners to ensure the products arrive safely at your designated port of destination. Shipments are available from major ports like Shanghai, Tianjin, delivering globally.