PPGI (pre-painted galvanized steel) and PPGL (pre-painted galvanized steel) are both pre-painted steel sheets coated with an organic coating. The primary difference lies in the substrate: PPGI uses galvanized steel, while PPGL uses galvanized steel. As a result, PPGL offers greater corrosion resistance and a longer service life, making it suitable for harsh environments, while PPGI is more cost-effective and suitable for general decorative and architectural applications.
The applications of PPGI and PPGL depend primarily on their substrate and corrosion resistance. PPGI (pre-painted galvanized steel) is often used in general applications such as roofing, siding, interior decoration, home appliances (refrigerator and washing machine casings), and furniture due to its cost-effectiveness.
PPGL (pre-painted galvanized steel) is more suitable for harsh environments such as roofing, siding, automotive interiors, and greenhouse materials, due to its excellent corrosion resistance.