What is galvanized steel coil DX51D?

D: stands for "Ductility", indicating that this grade of steel focuses on good forming performance.
51: is a serial number that identifies its specific mechanical properties and application range (usually refers to general forming purposes).
D (suffix): In the EN 10346 standard, the suffix letters (D, B, A) are used to distinguish different surface quality grades:
D: stands for "surface quality specified by the purchaser" or understood as "ordinary surface", suitable for most uses that do not require extremely demanding surface appearance (such as structural parts, some internal parts of home appliances, etc.). This is the most common and widely used grade.
| Parameter Category | Specific Item | Typical Range/Options |
|---|---|---|
| Substrate material | Steel grade | Meets DX51D requirements of EN 10346 |
| Substrate standard | - | EN 10346 |
| Coating type | - | Pure zinc coating (Z) |
| Coating weight | Common grades | Z100 (100 g/m²), Z140 (140 g/m²), Z180 (180 g/m²), Z200 (200 g/m²), Z275 (275 g/m²) |
|---|---|---|
| Surface structure | - | Normal spangle (N), small spangle (M), no spangle (brightening) (A) |
| Surface treatment | - | Passivated (C), oiled (O), passivated + oiled (CO) |
| Thickness (substrate) | General range | 0.30 mm - 3.00 mm (thicker or thinner can be customized) |
|---|---|---|
| Width | General range | 600 mm - 1500 mm (or divided into strips according to customer requirements) |
| Inner diameter | - | 508 mm (20 inches) / 610 mm (24 inches) |
Gl steel sheet in coil Dx51d, this seemingly ordinary metal material, is actually an indispensable cornerstone of modern industry and construction. It has won wide trust from designers, engineers to purchasing managers with its excellent corrosion resistance, excellent forming processability, reliable surface quality and unparalleled cost performance. Whether it is a towering steel structure building, a sophisticated home appliance, a sturdy automotive component, or a practical hardware product, DX51D is silently playing a key role, protecting the life and value of the product.
Choosing high-quality DX51D means choosing a long-term guarantee for your project; choosing a professional supplier means adding double insurance to this guarantee. We are well aware of the importance of material quality to the success of your project, so we always take "quality first, service first" as the foundation of our business.






