How to Choose Color of Pre-painted Steel?
| Colors | Reflectivity | Reflection effect |
| White | 84% | Great |
| Milky white | 70.4% | Good |
| Light red | 69.4% | Good |
| Beige | 64.3% | Good |
| Light green | 54.1% | Good |
| Light blue | 45.5% | Medium |
| Brown | 23.6% | Poor |
| Black | 2.9% | Very poor |
For color-coated steel sheets, the thermal expansion rate of the coating and the steel sheet is different. In particular, the linear expansion coefficients of the metal substrate and the organic coating are quite different. When the temperature changes, expansion or contraction stress will occur at the interface between the substrate and the coating. If they are not properly released, the coating will crack.
| Colors | Original gloss | Current gloss | Color difference | Original thickness | Current thickness | Degree of chalking |
| White | 35% | 3% | 1.49 | 24μm | 20μm | Level 2 |
| Red | 45% | 3% | 2.48 | 24μm | 20μm | Level 2 |
| Light yellow | 26% | 2% | 1.26 | 24μm | 17μm | Level 2 |
| Green | 41% | 2% | 3.43 | 24μm | 17μm | Level 2 |
| Blue | 41% | 2% | 4.95 | 24μm | 17μm | Level 2 |
There will be color differences if you use prepainted steel sheets from different manufacturers or batches in the same construction projects. The color may look the same or similar during construction, but there will be serious color differences after several years. Therefore, it is strongly recommended to order the same batch for the same project at one time. Different batches even from the same supplier may use different paints, which will increase the possibility of color difference.
Coating Gloss
The choice of coating gloss is mainly according to the use purposes. For example, medium and low gloss color coated steel is mainly for construction uses; while high gloss color-coated steel is mainly for home appliance uses.
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Angle Steel
Channel Steel
Universal Beam (l-Beam)
H-Beam Steel
Galvalume Steel Coil
Galvalume Steel Sheet
Galvanized Steel Sheet
Color Coated Plate
Stainless Steel Bar
Stainless Steel Pipe
Steel Bar
Wire Rope
Carbon Steel Pipe
Carbon Steel Plate
Aluminum Plate
Aluminum Coil
Aluminum Pipe
Aluminum Bar
Magnesium Ingot
Fasteners













