Hot-dip Galvanizing Steel DX51D
The core of DX51D steel coil production lies in the hot-dip galvanizing process:
1. Pre-treatment: The substrate of high-quality cold-rolled or hot-rolled steel coil is strictly cleaned (degreasing, pickling, rinsing, and plating) to ensure that the surface is absolutely clean and activated.
2. Hot-dip galvanizing: The steel strip is immersed in molten zinc liquid (about 450°C), and the iron-zinc reaction occurs to form a strong metallurgical bonding layer.
3. Zinc spangle control: By controlling the composition of zinc liquid (such as adding aluminum and antimony) and cooling method, different appearances (such as ordinary zinc spangles, small zinc spangles, and no zinc spangle smooth surface) can be obtained.
4. Post-treatment: It may include chromium passivation, oiling, smooth rolling, etc. to further improve corrosion resistance, processability or surface quality.
| 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) |
Why choose us?
Quality assurance, reliable source: We exclusively cooperate with large first-tier steel mills to ensure that each roll of DX51D complies with the EN 10346 standard, provides a complete material certificate (MTC), and has stable quality.
Adequate stock and complete specifications: Large standing inventory covers common thickness (0.3mm-3.0mm), width, coating (Z100-Z275), and surface type (ordinary zinc flower/small zinc flower/smooth finish).
Professional service, precise matching: A team of senior technical consultants provides you with free material selection guidance, and recommends the most cost-effective DX51D solution (coating, surface, treatment) according to your application scenario, processing method and budget to avoid performance waste or insufficient.
Deep processing, one-step: Equipped with advanced longitudinal shearing production line, it can customize the width of strips with high precision according to your requirements; provide Kaiping service to turn steel coils into flat plates, saving you time and cost of secondary processing.
Flexible business, win-win cooperation: Provide competitive market prices, support diversified orders (whole roll/slit/flat plate), and meet the different needs of centralized procurement of large projects and small-batch R&D and trial production.
