Prepainted color steel sheet
SSSC’s prepainted color steel sheet in coil (PPGI/PPGL) is manufactured from the steel base: SSSC’s GI/GL with the finish paint coating of either polyester or PVDF or SMP and the primer paint coating of either expoxy or PU.
SSSC’s PPGI/PPGL coil has the glossy surfaces, its machinability is suitable for applications of fabrication, forming, etc.
The SSSC’s PPGI is in accordance with the standards: JIS G3312, ASTM A755/A755M, SSSC’s standard: TCTMM.
The SSSC’s PPGL is in compliance with the standards: JIS G3322, ASTM A755/A755M, SSSC’s standard: TCCS04.
Samples of color of SSSC’s prepainted color steel sheet.-1_1596165636.jpg)
Specifications of product
| Thickness (mm) | 0.16 to 2.00 |
| Width (mm) | 1250 |
| Unit coil weight (ton) | 10 |
| Painting film thickness (µm) | 6 ÷ 30 |
| Coil inner diameter (mm) | 508 |
Production process chart
QUALITY STANDARDS (SSSC’s standards – TCTMK and TCCS-04)
- T-bend (both sides): ≤ 4T
- Erichsen: The rate of grids with painting layers peeled off is ≤ 5%
- Impact (applied to CQ quality only): The painting layer is not peeled off from the steel base.
- Pencil hardness: ≥ 3H
- Rubbing with M.E.K solvent: The painting layer is not peeled off from the steel base.
| Sides | Standard |
| Top finish | ≥ 100 dr |
| Bottom backer | ≥ 70 dr |
| Bottom monocoat | ≥ 70 dr |
Width tolererance: 0 ÷ 7 mm
Thickness tolerance: It shall apply to the thickness after prepainting.
| Nominal thickness |
Width< 1000 mm |
Width 1000 ÷ 1250 mm |
| < 0,25 |
+ 0,08 / - 0,03 |
+ 0,08 / - 0,03 |
| 0,25 ÷ < 0,40 |
+ 0,09 / - 0,04 |
+ 0,09 / - 0,04 |
| 0,40 ÷ < 0,60 |
+ 0,10 / - 0,05 |
+ 0,10 / - 0,05 |
| 0,60 ÷ < 0,80 |
+ 0,11 / - 0,06 |
+ 0,11 / - 0,06 |
| 0,80 ÷ < 1,00 |
+ 0,11 / - 0,06 |
+ 0,12 / - 0,07 |
| 1,00 ÷ < 1,25 |
+ 0,12 / - 0,07 |
+ 0,13 / - 0,08 |
| 1,25 ÷ < 1,50 |
+ 0,14 / - 0,09 |
+ 0,15 / - 0,10 |
Paint film
For 04 layers (Unit: µm)
|
Layers |
Paint coating |
| Finish layer | 12 ÷ 20 |
| Top primer layer | 5 ÷ 7 |
| Bottom primer layer | 5 ÷ 7 |
| Backer layer | 7 ÷ 10 |
For 03 layers (Unit: µm)
|
Layers |
Paint coating |
| Finish layer | 12 ÷ 20 |
| Top primer layer | 5 ÷ 7 |
| Bottom monocoat layer | 8 ÷ 10 |
* Remarks: The standards of other paint coatings shall be agreed by the manufacturer and the purchaser.
Gloss of paint coating
| Width | Type | |
| Wavy-edge (max) | Center buckling (max) | |
| < 1000 | 8 | 6 |
| >= 1000 | 9 | 8 |
Appearance: The product must be free from defects that are detrimental to its practical use.
| Sides | Duration (hrs) |
| Top side | ≥ 500 hrs |
| Bottom side | ≥ 200 hrs |
MARKING, PACKING AND MAINTENANCE
Packing
The product is packed either in accordance with the SSSC’s regulation or the customer’s requirement.
Transport and maintenance:
Transport: Transporting the product must avoid a big impact, which may be detrimental to quality, shape and appearance of the product.
Maintenance: It complies with the guide on maintenance attached on the product.
APPLICATIONS
Orther Product
