Prepainted gi sheet is a product made of cold rolled steel plate and galvanized steel plate by surface pretreatment (degreasing, cleaning, chemical conversion), continuous coating (roll coating), baking and cooling.Pre Painted Plain GI Sheet has lightweight, smooth surface, various colors, beautiful appearance, good UV resistance, acid and alkali resistance, can maintain color stability under various weather conditions, not easy to fade or damage.
Pre painted galvanized sheet has good processability and can be processed by shearing, stamping, bending and other processing operations without affecting the adhesion and integrity of the coating, suitable for various processing needs.
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. |
Structure of Prepainted GI Steel Coil
*Topcoat (finishing) :which provides color, pleasing appearance and appearance and a barrier film to enhance long-term durability.
*Primer coat: to prevent undercutting of paint and enhance corrosion resistance.
*Pretreatment layer: applied for good adhesion and to enhance corrosion resistance.
*Base steel sheet:cold rolled steel sheet
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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