Galvanized steel coil refers to steel products that have a layer of zinc (Zn) coated on the surface of cold-rolled or hot-rolled steel strip and are supplied in coil or sheet form. Galvanized sheets are divided into spangled galvanized coils and unspangled galvanized coils. Bright galvanized coils achieve a smooth, bright, mirror-like or semi-mirror-like surface through process control.
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Product Name
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Bright galvanized coil
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Paint coating
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Polyester paint(PE) High weather-resistant paint（HDP） PVDF
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Zinc Coating
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Z30-Z275
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Coil Weight
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Coil Weight 3-5tons,or Customized
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Usage
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Construction ,Automobile,Electrical etc.
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Standard
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JIS G3302 / ASTM A653M / EN10327 / DIN17162
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Grade
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SGCC/DC51D/DX51D/DX52D/SGCC/Q195/Q235
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Thickness
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0.085mm-3.0 mm
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Width
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600-1250mm(normal size:914mm,1000mm,1200mm,1250mm,1220mm)
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Spangle
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Regular spangle,Minimum spangle, Zero spangle, Big spangle
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Zinc coating
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30~275G/M2
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Hardness
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Soft hard(HRB60),medium hard(HRB60-85),full hard(HRB85-95)
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Color
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RAL color，Customer color card
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| Delivery time |
15 days |
The term "glossy finish" primarily depends on the following factors：
- Zinc liquid composition control (e.g., lead content, zinc purity)
- Cooling method (rapid cooling makes it easier to form fine crystal patterns or a pattern-free effect)
- Surface treatment method (whether it involves finishing, passivation, or straightening)
- Whether a finishing process is performed
Features of Bright Galvanized Coil:
- Bright and aesthetically pleasing surface;
- good surface flatness;
- suitable for products with high appearance requirements;
- cleaner and more uniform than ordinary zinc-coated sheets.
The difference between bright galvanized coil and ordinary galvanized coil
| Project |
Bright galvanized coil |
Ordinary galvanized coil |
| Surface |
Glossy and smooth |
Zinc flowers are obvious or rough |
| Appearance |
More aesthetically pleasing |
generally |
| Use |
Appearance parts, color-coated substrate |
Structural components, general-purpose components |
Why Choose JXL STEEL？
- Superior Materials – We use premium galvanized steel sheets with a durable coating to ensure a long service life.
- Customization Options – We offer a variety of colors, thicknesses, and coating types to meet your project needs.
- Strict Quality Control – Each roll of steel undergoes comprehensive testing (coating, adhesion, corrosion, mechanical properties).
- Competitive Pricing – Excellent value for money without compromising quality.
- On-Time Delivery – An efficient production and logistics system ensures timely delivery.
- Technical Support – We provide professional guidance on product selection, installation, and maintenance.
(JXL Steel production line)
（JXL STEEL Zinc Layer Management System）
Quality Inspection
- We first conduct a visual inspection to ensure the Bright galvanized coil are free of defects, facilitating subsequent processing and aesthetic use.
- Coating Performance Testing: We use a magnetic thickness gauge or coating thickness gauge to test the paint film thickness, ensuring it meets the customer's required thickness. JXL STEEL can produce paint films with a thickness of 25 microns on both the front and back sides. After testing, we sequentially conduct adhesion, bending performance, hardness, and impact resistance tests to ensure the paint does not crack or peel during customer use, and the product is fully qualified.
- Corrosion Resistance Testing: We will conduct salt spray tests to ensure that the color remains vibrant even in harsh operating environments.
- Substrate Mechanical Property Testing
| Project |
Method |
Common requirements |
| Yield strength |
tensile test |
190~350 MPa |
| Tensive strength |
tensile test |
270~450 MPa |
| Elongation |
tensile test |
≥20% |
| Bending performance |
bending test |
Bending diameter as specified by thickness |
| Stamping performance |
stamping test |
No cracks |
（The data table above is taken from the test data of the DX51D grade. If you have any special requirements, please contact us.）
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We have set up a sun exposure testing ground outside our factory, where some samples have been stored for over 10 years, yet they still look brand new and have vibrant colors.
- A third party is conducting an independent inspection of our products.
Export Cases
Shipping site
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- Whether you choose container shipping or bulk cargo shipping, JXL STEEL guarantees that the products delivered to your factory will be intact and undamaged.
