Xi'an Dongmeng Group Co., Ltd. is one of the most reliable manufacturers and suppliers of Galvanized Steel Coil Manufacturer | GI Coil Supplier | ASTM A653 DX51D SGCC Z275 Zinc Coated Steel Coil 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.
Galvanized Steel Coil is one of the most widely specified corrosion-resistant steel materials used in modern construction, infrastructure, manufacturing, energy, transportation, and industrial fabrication projects. Produced through a continuous hot-dip galvanizing process, the steel substrate is coated with a protective zinc layer that significantly improves durability, weather resistance, and long-term performance in demanding environments.
As a professional Galvanized Steel Coil Manufacturer and Exporter, Xi'an Dongmeng Group Co., Ltd supplies premium-quality GI Coil, Hot Dipped Galvanized Steel Coil, ASTM A653 Galvanized Coil, DX51D Galvanized Steel Coil, SGCC Zinc Coated Coil, and high-strength structural galvanized grades for global distributors, EPC contractors, steel fabricators, roofing manufacturers, HVAC system producers, and infrastructure projects.
Why EPC Contractors Choose Galvanized Steel Coil
For international construction and infrastructure projects, galvanized steel coil offers significant procurement advantages compared with painted steel or untreated carbon steel.
Procurement Benefits
| Factor | Galvanized Steel Coil Advantage |
|---|---|
| Service Life | Up to 50+ Years |
| Maintenance Cost | Low |
| Corrosion Resistance | Excellent |
| Fabrication Efficiency | High |
| Availability | Global Standard Material |
| Project Cost Control | Excellent |
Chemical Composition
| Element | C | Mn | Si | P | S |
|---|---|---|---|---|---|
| DX51D | ≤0.18 | ≤1.20 | ≤0.50 | ≤0.12 | ≤0.045 |
| SGCC | ≤0.15 | ≤0.80 | ≤0.30 | ≤0.05 | ≤0.05 |
Mechanical Properties
| Grade | Yield Strength MPa | Tensile Strength MPa | Elongation % |
|---|---|---|---|
| DX51D | 140-300 | 270-500 | ≥22 |
| DX52D | 140-260 | 270-420 | ≥26 |
| DX53D | 120-220 | 270-380 | ≥30 |
| S350GD | ≥350 | ≥420 | ≥16 |
Physical Properties
| Property | Value |
|---|---|
| Density | 7.85 g/cm³ |
| Melting Point | 1425-1540°C |
| Thermal Conductivity | 51 W/m·K |
| Elastic Modulus | 210 GPa |
| Electrical Resistivity | 0.15 μΩ·m |
Processing Performance Analysis
Roll Forming Performance
Galvanized steel coil exhibits excellent cold-forming characteristics suitable for:
Roofing sheets
Corrugated sheets
Decking panels
Steel framing
Slitting & Cut-To-Length
Available processing:
Precision slitting
Narrow strip production
Blank sheets
Custom dimensions
Stamping Performance
DX51D and DX52D grades provide outstanding formability for:
Home appliance panels
Ventilation ducts
Electrical enclosures
Automotive components
Sustainable & Environmental Benefits
As global construction standards increasingly emphasize sustainability and environmental performance, galvanized steel remains one of the most environmentally responsible engineering materials.
Sustainability Advantages
100% recyclable steel substrate
Reduced maintenance-related emissions
Long operational lifespan
Lower replacement frequency
Reduced material waste
Supports green building initiatives
Suitable For
LEED Projects
Green Building Programs
Sustainable Infrastructure
Renewable Energy Installations
Welding Performance Analysis
Recommended Processes:
Resistance Welding
Spot Welding
TIG Welding
MIG Welding
For optimal weld quality, localized zinc removal near the weld area is recommended.
Benefits:
Stable arc performance
Good joint strength
Reduced cracking risk
Excellent fabrication efficiency
Corrosion Resistance Analysis
The zinc coating acts as a sacrificial protective layer.
Typical Service Life
| Environment | Expected Service Life |
|---|---|
| Indoor Dry | 50+ Years |
| Rural | 40-60 Years |
| Urban | 20-40 Years |
| Coastal | 10-25 Years |
Zinc Coating Options
| Coating | Zinc Weight |
|---|---|
| Z100 | 100 g/m² |
| Z120 | 120 g/m² |
| Z180 | 180 g/m² |
| Z275 | 275 g/m² |
| Z450 | 450 g/m² |
| Z600 | 600 g/m² |
Products Display
Galvanized steel coil with spangle
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Galvanized steel coil with mini spangle and without spangle
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Products Specification
Applications of Galvanized Steel Coil
Value-Added Processing Services
Beyond supplying galvanized steel coils, Xi'an Dongmeng Group Co., Ltd provides complete downstream processing services for global fabricators, EPC contractors, and project buyers.
Available Processing Options
✔ Coil Slitting
✔ Cut-To-Length Sheets
✔ Corrugated Roofing Sheets
✔ Trapezoidal Roofing Profiles
✔ Steel Decking Sheets
✔ Solar Mounting Components
✔ HVAC Duct Components
✔ Structural Steel Accessories
Buyer Guide: How To Select The Right Galvanized Steel Coil
When purchasing galvanized steel coils, professional buyers should evaluate the following factors:
Environment
Indoor use → Z100-Z140
General outdoor use → Z180-Z275
Coastal environments → Z350-Z600
Fabrication Method
Deep drawing → DX52D / DX53D
Roll forming → DX51D
Structural applications → S350GD
Surface Requirement
Regular Spangle
Minimized Spangle
Zero Spangle
End Product
Roofing Sheet
Wall Cladding
HVAC Duct
Solar Structure
Home Appliance Panel
Cable Tray
Packaging& shipping
Contact Us
Request A Free Quote Within 24 Hours
Xi'an Dongmeng Group Co., Ltd
WhatsApp / WeChat / Tel: +86 15769214734
Email: office@dongmjd.com
Products: Galvanized Steel Coil, GI Coil, PPGI Coil, Galvalume Coil, Roofing Sheet, Steel Structure Materials
Service: OEM Manufacturing • Custom Processing • Global Export • Project Supply
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