Xi'an Dongmeng Group Co., Ltd. is one of the most reliable manufacturers and suppliers of hot-dip galvanized strip in China, also supports customized service. With abundant experience, we warmly welcome you to wholesale cheap products in stock here and get free sample from our factory. For price consultation, contact us.
Hot-Dip Galvanized Strip, also known as HDG Steel Strip, GI Steel Strip, Zinc-Coated Steel Strip, or Hot-Dipped Galvanized Narrow Coil, is widely used for automotive components, steel framing, cable armoring, construction profiles, C/Z purlins, ducting, and electrical enclosures.
Our factory operates advanced continuous hot-dip galvanizing lines, offering zinc coating from Z40 to Z600, spangle control (zero/minimized/regular), and precise slitting width from 10mm–600mm. We supply prime-quality galvanized steel strip for global OEM, construction, and industrial manufacturing.
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| Steelgrades | |
| Soft steels for cold forming | EN 10346 DX51D+Z; DX52D+Z; |
| Steels for use in construction | EN 10346 S220GD+Z; S250GD+Z; S280GD+Z; S320GD+Z; S350GD+Z; S390GD+Z; S420GD+Z; S450GD+Z; |
| Steels with higher yield strength for cold forming | EN 10346 HX260LAD+Z; HX300LAD+Z; HX340LAD+Z; HX380LAD+Z; HX420LAD+Z; HX460LAD+Z; HX500LAD+Z |
| Special features* | Special steels and steels with special alloys (e.g. >S500GD, >HX550LAD) upon request |
| Dimensions and form tolerances | |
| Strip thicknesses | 1,5 - 6,00 mm according to EN 10143 |
| Strip widths | 20 - 1.650 mm according to EN 10143 |
| Special features | tightest thickness tolerances up to +/- 0,02 mm |
| Zinc coatings | |
| Coating masses | 50 - 1.300 g/m2 |
| Composition of coating | Z (pure zinc) ZM (zinc-magnesium) |
| Coating finish | M (minimized spangle) |
| Types of surface | A (normal surface) B/C (rerolled surface |
| Option: galvanized longitudinal edges | from 58 (50**) - 420 mm strip width from 600 - 1.650 mm strip width |
| Differential galvanization of the strip surfaces | in a ratio up to 2:1 |
| Surface roughness | |
| Skin-passed or cold rerolled surface | up to 6,00 mm thickness |
| Surface finish | upon request (bright/semi-bright/normal/rough) |
| Rounded strip | |
| Strip thicknesses | 1,50 - 6,00 mm |
| Edge form | (**) |
Application
Hot-dip galvanized steel strip exhibits the following characteristics and advantages:
Excellent corrosion resistance: The galvanized layer effectively protects the steel material, prolonging its service life, especially in humid or corrosive environments.
Outstanding welding performance: Galvanized steel strip has good welding properties and can be widely used in welded structures such as pipelines, vehicle components, etc.
Smooth and uniform surface: The hot-dip galvanizing process results in a uniform zinc layer on the surface of the steel strip, ensuring good surface quality and some decorative properties.
Good ductility: Galvanized steel strip has good ductility during forming and processing, making it easy to fabricate into various shapes and sizes.
Economical and practical: The hot-dip galvanizing process is relatively cost-effective, and due to its excellent performance and long service life, it offers a high cost-performance ratio.
Hot-dip galvanized steel strip is widely used in construction, automotive manufacturing, appliances, machinery manufacturing, and other fields, making it an important metal material.
Product Features
Corrosion-resistant hot-dip zinc coating
Uniform coating thickness with high adhesion
Excellent formability for bending, slitting, stamping
Smooth surface with optional zero spangle
High strength grades for structural applications
Accurate width tolerance suitable for automated production lines
Suitable for welding, roll-forming, tube-making
Company profile
Xi'an Dongmeng Steel Co.,Ltd
Our company is an integrated and professional seamless steel pipe ,stainless steel pipe , steel plate sheet steel profiles,galvanized steel coil ,pr-painted coating steel coils and Nonferrous metals. Specialized in the fields of manufacturing and international business, Based the principle of sincerity, credit, mutual benefit and rich resources from China we have pr Ovid best quality products and value-adding service to customers for more than 15 years. As return, we won top reputation and established long-term business relation with customers from more than 50 countries and regions.
Our customers are very satisfied with our good reputation, efficient working system, good service for resourcing, inspection, loading, installation guidance and claim solving.
Our address
Room 4107, Runfeng Building, Sanqiao New Street, Weiyang District, Xi'an City, Shaanxi Province
Phone Number
+86 15769214734
office@dongmjd.com
Certificate
Hot-Dip Galvanized Strip – FAQ
1. What is the dimensional tolerance you can guarantee for slit galvanized strip?
We control:
Thickness tolerance: According to EN 10143 / ASTM A653
Width tolerance: ±0.05–0.10 mm depending on thickness
Edge burr height: ≤0.03 mm after slitting
Suitable for high-speed roll-forming and automated punching lines.
2. How do you guarantee zinc coating uniformity on narrow slit strips?
We perform:
Continuous coating weight sampling (X-ray / magnetic gauge)
Both-side measurement (mass balance method)
Cross-line thickness mapping (top/middle/edge)
Optional differential coating (e.g., Z275/Z100)
This ensures stable coating distribution even after slitting.
3. Can you provide high-strength galvanized strip for structural applications?
Yes. Available grades:
S280GD / S350GD / S450GD / S550GD
These are widely used for profiles, solar brackets, and high-load components.
4. How do you control edge quality after slitting?
We use precision slitting machines with:
Anti-burr sharpening systems
Tension leveling for edge stability
Laser tracking for cutting accuracy
Edge options:
Mill edge
Slit edge with burr control
Deburred edge
5. Do you support anti-fingerprint, chromated, or oiled surfaces?
Yes. Available surface options:
Chromated / Non-chromated
Oiled / Dry
AFP (Anti-Fingerprint)
Zero spangle or minimized spangle
These help improve corrosion resistance and appearance.
6. What is the maximum zinc coating for hot-dip galvanized strip?
We supply Z40–Z600, including heavy coatings suitable for outdoor structural components.
Single-side and differential coatings are optional:
Z450/Z90
Z600/Z120
7. What testing is performed before shipment?
Each coil undergoes:
Yield, tensile, elongation test
Zinc coating weight test
Adhesion test (T-bend / cupping / impact)
Surface inspection for scratches, oil marks, white rust
Coil shape and flatness measurement
Dimensional tolerance test
Third-party tests (SGS/BV/TÜV) can be arranged.
8. What are your common applications and can you advise suitable grade/coating?
Yes, we provide technical matching:
Cable armoring strip: 0.2–0.5 mm, zero spangle, Z180–Z275
C/Z purlins: S350GD/S450GD, Z275–Z450
Electrical cabinets: DX51D / DC51D, zero spangle
HVAC ducting: 0.4–1.0 mm, Z120–Z180
Cold-formed profiles: S280GD/S350GD
We can suggest the exact grade based on your forming process.
9. What is your MOQ? Can you mix thicknesses and widths in one container?
MOQ is 5–10 MT, depending on size
Mixed sizes allowed in one 20ft/40ft container
Custom widths accepted, even small sizes like 10–20 mm
10. What documents and certifications can you provide?
Mill Test Certificate (EN 10204 3.1)
Coil identification & traceability reports
REACH, RoHS compliance
CE (for structural grades)
SGS/BV/TÜV inspection reports (optional)
11. Do you support small trial orders for new projects?
Yes. We support:
Small trial coils (1–3 MT)
Free samples for laboratory or forming tests
Technical support for new tool/mold development
12. What packaging options do you offer for safe long-distance export?
Waterproof paper + VCI anti-rust film
Steel strapped with edge protectors
Wooden pallet or steel pallet
Fumigation-free export package
Ensures safe delivery for sea freight or long-term storage.
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