Pre Coated GI Sheet is a pre-treated galvanised steel sheet that is coated with organic coatings such as polyester, silicone-modified polyester (SMP), polyvinylidene fluoride (PVDF) and other coatings. The coatings provide an additional layer of protection to further enhance resistance to oxidation and corrosion, especially suitable for long-term use in harsh environments.
The thickness of the coating and the quality of the galvanising layer are key factors affecting the service life of the steel sheet. Appropriate thickness of coating and galvanising layer should be selected according to the usage scenario and environmental conditions to ensure corrosion resistance and durability. Different coating materials have different corrosion and weather resistance, such as polyester (PE) for general environment, while polyvinylidene fluoride (PVDF) is suitable for coastal or highly polluted areas.
Prepainted GI Sheet Specification
|
Grade |
DX51D,DX52D,SGCC,SGCH,G350,G550,etc |
|
Paint film |
Top:15-25 +5um |
|
Surface coating |
PE, SMP, HDP, PVDF |
|
Zinc Coating |
30-275 g/m2 |
|
Coil Weight |
3-8 Tons,or as required |
|
Thickness |
0.45mm |
|
Width |
925~1220mm |
|
Color |
All RAL code or as customer's sample |
|
Length |
Coil or as customer's request |
|
Packing details |
waterproof paper+plastic film+iron packing+bunding or as per customers request. |
How to choose PPGI?
- Coating Thickness
Different application environments require different thicknesses of galvanising and coating. For example, in coastal areas or areas with high levels of industrial pollution, thicker coatings and galvanising should be selected.
- Coating Quality
When selecting, it is important to ensure that the coating is uniform, has strong adhesion and is free from defects such as bubbles and cracks. The high-quality coating is key to ensuring the durability of steel coils.
Pre galvanized sheets are available in a wide range of colours and finish options to suit different architectural styles and design requirements.It fulfils the functionality of roofs and walls, and also adds visual aesthetics to the building.Pre coated gi sheet treated with coatings can resist various weather effects such as ultraviolet rays, acid rain, and moisture, and maintain stability and color durability in long-term use.
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