Differences Between PPGI And PPGL Sheets
Differences Between PPGI And PPGL Sheets
Differences Between PPGI And PPGL Sheets
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PPGI means pre-painted galvanized steel while PPGL describes pre-painted galvalume steel. Below is a list of differences between PPGI and PPGL.
Basic Composition and Use
PPGI sheets are processed by coating with molten zinc, offering protective properties that make them ideal for roofing and other applications like outdoor billboards and washing machines. The coating ensures they resist corrosion and can withstand harsh weather conditions.
PPGL sheets, on the other hand, are coated with a mixture of zinc, silicon, and aluminum. Specifically, the composition includes at least 55% aluminum and 43.5% zinc, along with silicon and other elements. This composition makes PPGL sheets suitable for uses like roofing, chimney pipes, and ovens due to their excellent corrosion resistance, heat resistance, and surface conductivity.
When it comes to durability, PPGL sheets outperform PPGI sheets, especially under exposure to natural elements like water. PPGL sheets can last beyond 10 years and exhibit superior resistance to rust and oxidation processes, offering a lifespan almost double that of PPGI sheets.
Thickness and Weight
Generally, PPGI sheets are lighter compared to PPGL sheets, with the thickness depending on the coating applied. However, PPGL sheets tend to be more corrosion-resistant. The edges of PPGL sheets may become vulnerable to corrosion when cut, unlike PPGI sheets where corrosion might only be localized and less likely to spread.
The aluminum component in PPGL sheets provides a smoother finish than PPGI sheets, making them easier to paint without pre-treatment, although this is not advisable. Price-wise, PPGI sheets are generally more cost-effective than PPGL sheets.
If you're still unsure which type is right for you, consider the specific advantages—PPGI for lighter weight and lower costs, PPGL for superior longevity and corrosion resistance. Consult with professionals to make the best choice based on your specific needs.
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