The difference between PPGI and PPGL

PPGI and PPGL have significant differences in many aspects. The following is a detailed comparison of the two:

1. English full name and meaning
PPGI: The English full name is Pre-Painted Galvanized, which is color-coated galvanized. It usually refers to steel products such as PPGI Coil (color-coated galvanized coil) and PPGI Sheet (color-coated galvanized sheet).
PPGL: The English full name is Pre-Painted Galvalume, which usually refers to aluminum-zinc color-coated steel sheet.
2. Substrate material
PPGI: The substrate is a galvanized steel sheet, that is, a thin steel sheet is immersed in a molten zinc tank to adhere a layer of zinc to its surface. Galvanized steel sheet has good adhesion and weldability of paint, and is one of the commonly used substrates for color-coated coils.
PPGL: The substrate is an aluminum-zinc-coated steel sheet, and its ratio is generally 55% aluminum, 43.5% zinc and 1.5% silicon. The corrosion resistance of aluminum-zinc-coated steel sheet is 2 to 5 times that of hot-dip galvanized steel sheet, and it has good heat reflectivity, making it an ideal building material for saving energy.
3. Performance characteristics
PPGI: has excellent weather resistance, corrosion resistance and decorative properties. There are many types of organic coatings on the surface of color-coated PPGI rolls, including PE, SMP, HDP, PVDF, etc. These coatings have their own characteristics, such as PE coating has good weather resistance and thermal stability; SMP coating has good external durability and anti-powdering; HDP coating has excellent color retention and UV resistance; PVDF coating has excellent color retention and UV resistance, as well as good formability and anti-dirty properties.
PPGL: In addition to the weather resistance and decorative properties of PPGI, its corrosion resistance is better than PPGI, and it is suitable for building materials in harsh environments such as coastlines. PPGL color-coated rolls also have excellent heat resistance and are not easy to fade.
4. Application scenarios
PPGI: Due to its good decorative and weather resistance, it is often used in home appliance housings, interior decoration, etc.
PPGL: Due to its better corrosion resistance, it is more suitable for building materials in harsh environments such as coastlines. However, both PPGI and PPGL are widely used in manufacturing industries such as construction, machinery, coal mining, chemical industry, electricity, railway vehicles, automobile industry, roads, bridges, containers, sports facilities, agricultural machinery, petroleum machinery, exploration machinery, greenhouse construction, etc.
In summary, there are significant differences between PPGI and PPGL in terms of English full name, substrate material, performance characteristics and application scenarios. Understanding these differences will help users choose the appropriate color coated coil products according to actual needs.