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Help CenterOver 2 Year Rust-Resistance Galvanized Coil G300 0.6mm Factory Stocked Coil Loading Supervision Provided
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Hemaokang Steel (Shandong) Co., Ltd. is pleased to introduce our Over 2 Year Rust-Resistance Galvanized Coil G300 0.6mm, a factory-stocked product designed to deliver reliable anti-corrosion performance for a broad range of industrial applications. As a young but fast-growing manufacturer with annual export value between US$50 million and US$100 million, we combine modern production capabilities, strict quality control, and efficient logistics to support global buyers. This galvanized coil offers sustained rust resistance for more than two years in standard atmospheric environments, making it a practical choice for roofing, cladding, light steel structures, and various forming applications.
Our G300 galvanized coil is manufactured through a carefully controlled hot-dip galvanizing process, ensuring a uniform zinc coating that protects the steel substrate from corrosion and abrasion. With a thickness of 0.6mm, this coil strikes a balance between strength and formability, allowing easy cutting, stamping, bending, and roll forming. We maintain a substantial factory stock to enable quick delivery, and we provide loading supervision at the port of shipment to ensure your cargo is handled securely and efficiently.
Key Features & Benefits
- Long-lasting rust resistance: The G300 zinc coating (average coating mass on both sides) provides more than two years of protection under typical open-air storage without red rust, reducing maintenance costs.
- Uniform coating & excellent adhesion: The hot-dip galvanized layer bonds tightly with the steel base, minimizing spalling or peeling during forming and punching.
- Superior workability: The 0.6mm steel substrate is soft enough for complex profiles yet rigid enough for load-bearing panels and components.
- Consistent dimensional tolerance: Our coils are produced with tight thickness and width control, ensuring smooth feeding in high-speed stamping or roll-forming lines.
- Factory-stocked for fast delivery: Large inventory means short lead times, even for combined orders.
- Port loading supervision: Dedicated staff supervise the loading process at Qingdao port, helping to prevent damage and ensure accurate shipment.
Technical Specifications (Typical Values)
| Parameter | Value |
|---|---|
| Steel Thickness | 0.6 mm (0.024 inch) |
| Zinc Coating Designation | G300 (ASTM A653 / equivalent standard) |
| Coating Type | Hot-dip galvanized (zinc) |
| Surface Finish | Regular spangle / minimised spangle / spangle-free (optional) |
| Coil Inner Diameter | 508 mm or 610 mm (optional) |
| Coil Outer Diameter | Approx. 1000 – 1400 mm |
| Coil Weight | 3 – 8 metric tons per coil (customizable) |
| Width Range | 600 – 1250 mm (custom slitting available) |
| Tensile Strength | 270 – 420 MPa depending on grade |
| Yield Strength | 140 – 300 MPa depending on grade |
| Surface Treatment | Chromated / passivated / oiled (optional) |
Typical Applications
- Roofing sheets, corrugated sheets, and roof tile profiles
- Wall cladding and sandwich panel facings
- Purlin, light steel frame, and structural components
- Automotive parts, silencers, and brackets
- Household appliances, cabinets, and electrical enclosures
- General sheet metal fabrication, ductwork, and storage systems
Quality Assurance & Export Support
Our company operates under an ISO9001 quality management system, which governs our production process, incoming material inspection, process control, and final product checks. We understand that consistency is critical for B2B buyers, so every coil we ship is verified for coating weight, thickness, surface quality, and mechanical properties before release.
As a supplier with 51-100 employees and an annual export value of US$50-100 million, we serve markets across North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, the Middle East, East Asia, Western Europe, Central America, Northern Europe, Southern Europe, and South Asia. Our location in Liaocheng, Shandong, provides convenient access to Qingdao port, one of China's busiest trade hubs, ensuring efficient sea freight to destinations worldwide.
Loading Supervision & After-Sales Assurance
We know that cargo damage during loading can lead to delays and extra costs. Therefore, our export team supervises the entire loading process at the port, checking the condition of coils, securing them properly in containers, and verifying that the packing matches the shipping documents. We also offer detailed photos before loading and upon request, third-party inspection is acceptable at the buyer's cost.
Why choose Hemaokang Steel? Backed by an ISO9001-certified quality system, a strong export track record, and a commitment to transparent communication, we deliver galvanized coils that meet practical performance expectations. Our factory-stocked G300 0.6mm material is ready for fast dispatch, and our experienced team can provide processing recommendations for your specific application. Whether you are a roofing manufacturer, a stamping parts supplier, or a trading company, we welcome your inquiry and are prepared to supply consistent, rust-resistant galvanized coil with reliable loading supervision.
Please contact our sales team for current pricing, full specification cards, or to arrange a trial order. We look forward to building a long-term supply relationship that helps your business grow.
FAQ
Q: What does G300 mean in galvanized coil?
A: G300 is a zinc coating designation commonly used in ASTM A653 standard, referring to a total coating weight of approximately 300 grams per square meter (measured on both sides by the triple spot test). It provides a relatively thick zinc layer, offering enhanced corrosion resistance for prolonged outdoor exposure.
Q: How long can this coil resist rust?
A: Under typical atmospheric conditions with regular exposure to moisture, the G300 coating can effectively prevent red rust for more than two years. Actual lifespan depends on environmental factors such as humidity, salt content, chemical exposure, and the condition of cut edges.
Q: Can the coil be supplied in different widths or weights?
A: Yes. The standard production width can be customized, and we offer slitting services to produce narrower coils. Coil weight can also be adjusted based on your handling equipment and order requirements. Please share your specific needs with our sales team.
Q: Is this coil suitable for making roofing sheets?
A: Absolutely. With a thickness of 0.6mm and G300 zinc coating, this galvanized coil is widely used for corrugated roofing, metal tile sheets, and wall cladding. It offers good rigidity and corrosion protection. For severely coastal or industrial environments, you may consider higher coating weights such as G350 or G400.
Q: What is the coil's inner hole size?
A: The common inner diameter is 508 mm, with 610 mm also available upon request. Please confirm which size your uncoiler or cranes are designed for so that we can match it accordingly.
Q: Do you provide loading supervision?
A: Yes, loading supervision is provided as part of our standard export service. Our staff inspects the coils, checks the packing condition, and supervises the container loading at Qingdao port, ensuring safe loading and minimizing in-transit damage.
Q: Can you accept third-party inspection?
A: Yes, we welcome third-party inspections such as SGS, BV, or other independent agencies. The inspection can be arranged before shipment or during production. The cost of third-party inspection is usually borne by the buyer, unless otherwise agreed.
Q: What certifications does your company hold?
A: Our company is ISO9001 certified for quality management systems. We can provide the certificate as part of the commercial document package. If your target market requires other certifications or test reports, please let us know, and we will do our best to assist.
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