Hot Dipped Galvanized Steel Coils 0.3mm-5mm HDG Coils Zinc Coating 80-350g/M2 ASTM A123

HDG Steel Coils 0.3-5mm Zinc Coating 80-350g/M² ASTM A123 Compliance

Hot-Dip Galvanized (HDG) Steel Coils are engineered for extreme environments, offering unmatched corrosion resistance and structural integrity. With a ​zinc coating range of 80–350g/m² (Z80 to Z350 grades) and thicknesses from ​0.3mm to 5mm, these coils comply with ​ASTM A123, ​EN 10346, and ​JIS G3302 standards, making them ideal for construction, energy, and heavy machinery sectors. The HDG process ensures full-surface zinc adhesion, delivering 20–50 years of rust-free performance in coastal, industrial, or high-UV regions.

Key Benefits:

• ​Adjustable Corrosion Protection: Choose zinc coatings from 80g/m² (light-duty) to 350g/m² (marine-grade) for project-specific needs.
• ​Global Compliance: ASTM A123, EN 10346, JIS G3302, and AS/NZS 4680 certified for international projects.
• ​Cost Efficiency: 25% lower lifecycle costs vs. stainless steel, with minimal maintenance.
• ​Versatile Dimensions: Widths 600–2,000mm (standard 1,000–1,500mm), ID/OD tailored for automated processing.
• ​Eco-Friendly: 70% recycled steel content, ISO 14001-certified production with low VOC emissions.
• ​Fast Turnaround: 12–18 days lead time for bulk orders (20+ tons), including custom punching or slitting.

​2. Technical Specifications

​3. Why Import Our ASTM A123 HDG Steel Coils?

Competitive Advantages:

• ​Price Leadership: ​25–30% cheaper than EU/US suppliers with identical ASTM A123 certification.
• ​Quality Assurance: Third-party tested for coating adhesion (≥95%), salt spray resistance (1,500–5,000 hours), and bendability (0T–3T).
• ​Custom Solutions: Pre-weathered (patina) finishes, embossed anti-slip surfaces, or pre-punched holes.
• ​Advanced Logistics: Seaworthy packaging (VCI film + edge guards) with real-time shipment tracking.
• ​Sustainability: Carbon footprint reports and CBAM compliance for EU importers.
• ​Technical Expertise: Free material substitution analysis and welding guidelines for fabricators.

​4. Heavy-Duty Industrial Applications

FAQ
1. Do you have your own factory?

Yes, we do. We have our own factory, we can provide stable inventory, competitive prices and good quality.

2. What is your surface treatment method?

We can make special logos, icons or other things you order on the products. No matter what, we can do it as per your request.

3. What kind of payment can you accept?

1).100% irrevocable L/C at sight.

2).30% T/T in advance, the balance according to the copy of the bill of lading.

3).30% T/T in advance and balance of L/C.

4. How about the delivery time?

5-7 days after deposit received.

5. Why choose our company?

A). We have more stable inventory, competitive prices and good quality.

B). We have more integrity experience in international trade.

C). We can provide personal customization services, such as adding your company's logo, specified colors, etc. to the product.

6. What is the use of the product?

Galvanized Steel Coils, industry, chemical industry, secondary processing, construction, etc.

7. Can you send samples for inspection?

We can. We can send you samples for free.

8. Can you make products according to our requirements?

Yes, we will strictly follow your requirements, such as packaging method, product length, product handling method, etc.

JIANGSU CHINA STEEL UNION INDUSTRIAL CO.,LTD.

Specializing in premium stainless steel products (sheets, pipes, high-pressure tubes, bars), aluminum/steel coils, galvanized steel, and copper alloys. Equipped with advanced cold-rolling mills, CNC machining centers, and plasma cutting systems, we supply precision-engineered materials worldwide. Partnered with automotive giants in Germany, construction firms in the Middle East, and energy projects in Asia-Pacific. Committed to sustainable innovation, we offer OEM customization and JIT delivery. Let’s build resilient supply chains for aerospace, marine, and industrial applications