Our Galvanized Steel Coil is a premium metal product engineered to deliver exceptional durability, corrosion resistance, and versatility. Through advanced galvanization processes (hot-dip or electro-galvanization), a uniform zinc layer is bonded to the steel surface, forming a protective barrier against rust, moisture, and harsh environmental conditions. Suitable for both indoor and outdoor applications, it meets global industry standards and caters to the diverse needs of B2B buyers in construction, machinery, electronics, and more.
2. Core Advantages
① Superior Corrosion Resistance
The zinc coating (with customizable weight: ZN50-ZN600 g/㎡) effectively isolates steel from oxygen and water, extending the product’s service life by 5-10 times compared to ungalvanized steel.
Ideal for high-humidity, coastal, or industrial environments where rust prevention is critical.
② Excellent Mechanical Performance
Base material options: Q235, Q355, SPCC, SECC, SGCC (compliant with ASTM A653, EN 10346, JIS G3302 standards).
High tensile strength (270-550 MPa) and ductility, ensuring easy processing (cutting, bending, stamping) without coating damage.
③ Consistent Quality & Precision
Thickness range: 0.1-4.0mm (tolerance: ±0.02mm); width range: 600-1500mm (customizable for specific needs).
Smooth surface finish (bright or matte) with no defects like pinholes, scratches, or uneven coating, meeting strict aesthetic and functional requirements.
④ Cost-Effective Solution
Low maintenance cost: No frequent repainting or anti-rust treatments required.
Competitive pricing with flexible MOQ (minimum order quantity: 1 ton) to support small-batch trials and large-scale procurement.
3. Technical Specifications
Parameter
Specification
Product Type
Hot-Dip Galvanized Coil (HDG), Electro-Galvanized Coil (EG)
Base Material
Carbon Steel (Q235, Q355), Cold-Rolled Steel (SPCC, SECC), Hot-Rolled Steel
Coating Process
Hot-Dip Galvanization (HDG): Immersing steel in molten zinc (450℃); Electro-Galvanization (EG): Electrochemical deposition of zinc
Coating Weight
ZN50-ZN600 g/㎡ (customizable per customer requirements)
Thickness
0.1mm - 4.0mm (tolerance: ±0.02mm)
Width
600mm - 1500mm (custom width available)
Length
200m - 600m/coil (or cut-to-length as needed)
Surface Finish
HDG: Gray matte; EG: Bright/satin (passivation optional for enhanced corrosion resistance)
Standards Compliance
ASTM A653 (USA), EN 10346 (EU), JIS G3302 (Japan), GB/T 2518 (China)
4. Application Fields
Our Galvanized Steel Coil is widely used across global industries, thanks to its adaptability:
Construction: Roofing, wall panels, steel structures (warehouses, stadiums), fencing, and guardrails.
Machinery & Equipment: Chassis, brackets, agricultural machinery parts, and industrial containers.
Electronics & Home Appliances: Cabinet panels for refrigerators, washing machines, and air conditioners; electrical enclosures.
Automotive: Car body parts, fuel tanks, and undercarriage components (cold-rolled galvanized coils for precision parts).
Packaging: Food-grade electro-galvanized coils for canning, metal buckets, and packaging containers (FDA-approved).
5. Quality Assurance
We prioritize quality control throughout the production process to ensure every coil meets international standards:
Raw Material Inspection: Sourcing high-quality steel from certified suppliers with strict material testing (chemical composition, mechanical properties).
In-Process Monitoring: Real-time monitoring of galvanization temperature, coating thickness, and surface finish via advanced equipment (X-ray coating thickness gauge, surface defect detector).
Final Testing: Each coil undergoes corrosion resistance tests (salt spray test: 500-1000 hours), adhesion tests, and dimensional checks before shipment.
Certifications: ISO 9001, SGS, BV, and CE certifications available to meet buyer requirements in different regions.