China Zero-Spangle Hot-Dip Galvanized Coil Suppliers | Smooth & Uniform Coating from Factory
Comparison Table
| EN Standard | BAOGANG Standard |
|---|---|
| DX51D+Z | DC51D+Z |
| DX52D+Z | DC52D+Z |
| DX53D+Z | DC53D+Z |
| DX54D+Z | DC54D+Z |
| DX56D+Z | DC56D+Z |
| DX57D+Z | DC57D+Z |
| HX260LAD+Z | HC260LAD+Z |
| HX300LAD+Z | HC300LAD+Z |
| HX340LAD+Z | HC340LAD+Z |
| HX380LAD+Z | HC380LAD+Z |
| HX420LAD+Z | HC420LAD+Z |
| HX460LAD+Z | HC460LAD+Z |
| HX500LAD+Z | HC500LAD+Z |
| HX180YD+Z | HC180YD+Z |
| HX220YD+Z | HC220YD+Z |
| HX260YD+Z | HC260YD+Z |
| HX180BD+Z | HC180BD+Z |
| HX220BD+Z | HC220BD+Z |
| HX260BD+Z | HC260BD+Z |
| HCT600X+Z | HC340/590DPD+Z |
| HCT 780X+Z | HC420/780DPD+Z |
| HCT 980X+Z | HC550/980DPD+Z |
| - | HC820/1180DP+Z |
Applications
Solar mounting structures, cleanroom equipment, and architectural façades requiring aesthetic consistency.
Key Advantages

Visual Appeal
Gloss levels 20–40 GU eliminate light scattering in visible installations.

Coating Integrity
XRF testing guarantees zinc purity ≥99.995% with <0.01% Pb/Cd.

Custom Thickness
Zinc layers 20–275 μm (Z100–Z275) for coastal or industrial environments.
Frequently Asked Questions
What are the equivalent EN and BAOGANG steel grades?
Common equivalents include EN DX51D+Z corresponding to BAOGANG DC51D+Z, DX52D+Z corresponding to DC52D+Z, and high-strength grades like HX340LAD+Z corresponding to HC340LAD+Z. Refer to our comparison table above for the complete cross-reference list.
What are the main applications for these galvanized coils?
These hot-dip galvanized coils are ideal for solar mounting structures, cleanroom equipment, and architectural façades where high aesthetic consistency and corrosion resistance are required.
What is the advantage of a zero-spangle surface?
A smooth, zero-spangle surface provides a uniform, high-quality appearance and optimal paint adhesion. Combined with gloss levels of 20–40 GU, it eliminates light scattering, making it perfect for highly visible installations.
How is the quality and purity of the zinc coating ensured?
Quality is verified through rigorous XRF testing, which guarantees a zinc purity level of ≥99.995% with strict limitations on lead (Pb) and cadmium (Cd) content to less than 0.01%.
What zinc coating thicknesses can be customized?
We offer custom zinc layer thicknesses ranging from 20 to 275 μm (Z100 to Z275) to meet the specific requirements of different environments, including harsh coastal or industrial locations.

