S320GD (1.0250) Galvanized Steel Coil
- Alloy or Not: Non-alloy
- Technique: Hot Rolled, Cold Rolled
- Thickness: 0.12-6.0 mm, or as requested
- Width: 600-1500 mm, or as requested
- Weight: 3-20 tons
- Galvanization: Hot-dip Galvanizing, Electro-Galvanizing, Pre-Galvanizing
- Processing Service: Shearing, Flattening, Cut-to-Length, Coiling, Bending, etc.
- Certification: ISO 9001, CE
- Inspection: SGS, TUV, Factory Inspection
- Origin: Hubei/Henan/Jiangsu, China
- Port: Qingdao, Tianjin, Lianyungang
- MOQ: 5 tons (or as per negotiation)
- Delivery Time: 8-14 Days
- Payment: T/T, L/C
Product Detail
S320GD Galvanized Steel Coil is a high-strength, hot-rolled steel with a hot-dip galvanized coating. It is primarily composed of carbon, manganese, silicon, and trace amounts of phosphorous and sulfur, providing excellent machinability and formability. With a yield strength of 320 MPa and a tensile strength ranging from 400 to 500 MPa, S320GD is well-suited for medium-load applications.
The galvanized layer of the steel coil is typically formed through the hot-dip galvanizing process. Its thickness depends on the specific application—thicker and higher-quality coatings offer better corrosion resistance. This coating significantly improves the steel coil’s durability, especially in environments with high humidity or chemical exposure, making it ideal for industries like marine, chemical, and construction. In some cases, an aluminum-zinc alloy coating may be used for enhanced corrosion protection.
S320GD steel coil is widely used across various industries, including automotive manufacturing, construction, and home appliances. Common applications include car body parts, roofing panels, wall cladding, and appliance housings. It is also used in cold storage, containers, and other applications where both strength and corrosion resistance are crucial.
Contact us if you are unfamiliar with this product or have unanswered questions.
Features
S320GD galvanized steel coils could bring the following benefits to your project:
- Tough Against Rust – Stands up to weather and doesn’t rust easily.
- Lasts Long – The zinc layer keeps it going strong for years.
- Super Strong – Built to handle heavy-duty jobs without bending or breaking.
- Saves Money – Less maintenance needed, so it’s cost-effective.
- Multi-Purpose – Fits a wide range of uses, from buildings to cars.
- Easy to Shape – Flexible enough for all kinds of projects.
- Easy to Weld – Works well with welding, so no hassle in production.
- Clean Look – Smooth surface that looks good in visible applications.
Applications
Construction
Structural beams, wall frames, roofing sheets, support columns, etc.
Automotive
Chassis components, body panels, exhaust systems, reinforcement parts, etc.
Appliances
Refrigerator bodies, washing machine drums, microwave enclosures, air conditioner casings, etc.
Electronics
Enclosures for electrical boxes, cable trays, mounting brackets, server racks, etc.
Furniture
Shelving units, bed frames, cabinet bodies, storage racks, etc.
HVAC
Ductwork, ventilation systems, outdoor unit enclosures, industrial fan covers, etc.
Product Parameters
| Parameter | Details |
|---|---|
| Standard | EN 10346:2015, ISO 3575:2016, ASTM A653/A653M-22, JIS G3302:2010, GB/T 2518-2008, GB/T 14977-2002, etc. |
| Grade | S320GD |
| Metal Coating Type | Z (Pure Zinc), ZF (Zinc-Iron Alloy), ZA (Zinc-Aluminum Alloy), ZM (Zinc-Magnesium Alloy), AZ (Aluminum-Zinc Alloy), AS (Aluminum-Silicon Alloy) |
| Thickness | 0.12-6.0 mm, or as requested |
| Width | 600-1500 mm, or as requested; Standard 1000 mm, 1320 mm, 1500mm |
| Coil ID | 508-610 mm |
| Coil Weight | 3-20 metric tons per coil |
| Tolerance | ±1%, or as requested |
| Galvanization | Hot-Dip Galvanizing, Electro-Galvanizing, Pre-Galvanizing |
| Zinc Coating | Z30-600 g/m² |
| Surface Structure | Regular spangle, Minimized spangle, Zero spangle, Big spangle |
| Surface Treatment | 1) Skin Pass, Sand Blasted 2) Pre-painted 3) Galvanized 4) Oiled 5) Passivated 6) PE, PVDF, or other anti-corrosive coatings 7) As requested |
| Condition of Delivery | +HR/+CR/+A/+O/+UPK, or as requested |
| Testing Method | CCA/MPT/CST/SST/MA/NDT, etc. |
| Application | Roofing sheets, wall frames, structural beams, chassis components, body panels, refrigerator bodies, washing machine drums, enclosures for electrical boxes, ductwork, ventilation systems, etc. |
| Certification | Approved by ISO 9001, CE |
| Packaging | Standard seaworthy packing, or as requested |
*Condition of Delivery: HR – Hot Rolled, CR – Cold Rolled, A – Annealed, O – Oiled, UPK – Unpickled
*Testing Method: CCA – Chemical Composition Analysis, MPT – Mechanical Properties Testing, CST – Coating Surface Testing, SST – Salt Spray Testing, MA – Metallographic Analysis, NDT – Non-Destructive Testing
Material Specifications
Chemical Composition
| Grade | C | Si | Mn | P | S |
|---|---|---|---|---|---|
| S320GD | ≤0.2 | ≤0.6 | ≤1.7 | ≤0.1 | ≤0.045 |
*According to EN 10346-2015.
Mechanical Properties
| Grade | Tensile Strength (σb, MPa) | Yield Strength (σs, MPa) | Elongation (δ, %) |
|---|---|---|---|
| S220GD+Z | ≥390 | ≥320 | A80: ≥17 |
| S220GD+ZF | |||
| S220GD+ZA | |||
| S220GD+ZM | |||
| S220GD+AZ | |||
| S220GD+AS |
*According to EN 10346-2015.
*The following minimum elongation values apply for different thicknesses:
- 0.5mm < t ≤ 0.7mm: minimum elongation is reduced by 2% from the values in the table.
- 0.35mm < t ≤ 0.5mm: minimum elongation is reduced by 4% from the values in the table.
- t ≤ 0.35mm: minimum elongation is reduced by 7% from the values in the table.
Why Choose Us
Consistent Quality
We address your primary quality concerns with S320GD galvanized steel coils — such as coating uniformity, potential missed spots, and coating adhesion — through continuous hot-dip galvanizing processes & strict control of temperature and timing, non-destructive thickness testing with magnetic gauges, and multi-step-pre-treatment, including acid cleaning and surface preparation, to ensure consistent performance, corrosion resistance, and long-lasting durability across various environments.
Precise Dimensions
We guarantee the dimensional accuracy of our S320GD galvanized steel coils, maintaining tight tolerances within ±0.01 mm through precision equipment and ISO 9001-certified processes. Every batch undergoes 100% inspection, with zero deviation complaints in the past 5 years. We ensure smooth project execution without installation delays.
Stable Supply
We have 3 factories with a combined annual capacity of over 500,000 tons. In the event of any unforeseen circumstances, we can coordinate across factories to ensure stable production and on-time delivery.
Stable & Competitive Pricing
We maintain upstream raw material suppliers with price-lock agreements in place to effectively manage material cost fluctuations. Also, considering that our clients may face pressure from market changes, we will try our best to offer reasonable discounts to both new and existing clients.
Secure Packaging & Shipping
Packaging can be customized according to your requirements. We provide transparent, real-time photos of the packaging and loading process for your verification. You can also choose your trusted freight forwarder for transportation to ensure the entire logistics process is secure and reliable.
About Us
Founded in 1999, SteelPRO Group operates three factories with a combined annual production capacity of over 500,000 tons. We specialize in manufacturing a wide range of steel products, including round steel, profiles, plates, and pipes. Our portfolio encompasses low-alloy structural steel, tool steel, special steel, and more.
With strict adherence to global standards such as GB, ASTM, DIN, EN, and JIS, we ensure high-quality products, including heat-treated, machined, and prestressed steel. Our solutions are trusted by customers in diverse industries, and we proudly export to different countries across Europe, North America, and Asia.
At SteelPRO, we are dedicated to delivering tailored steel solutions and growing alongside our dear clients.
Certification
FAQ
What are your prices?
Our prices are subject to change depending on supply and market conditions. For an accurate and up-to-date quote, please contact our sales team directly.
Can you provide relevant documentation?
Yes, we can provide a wide range of documentation, including Certificates of Analysis/Conformance, Insurance, Certificates of Origin, and any other required export documents.
What is the average lead time?
As per mass production, the lead time is 5-20 days after:
1) we have received your deposit; 2) we have received your final confirmation on your orders.
If our lead time doesn’t meet your deadlines, please contact our sales directly in advance in case of any potential issues. We will try to accommodate your needs in all cases, and we are able to do so in most cases.
Can you provide free samples?
Yes, we can provide free samples for quality evaluation. However, shipping costs are generally covered by your company.
Can I visit your factory?
Of course! You are welcome to visit our factory. Please contact us in advance to arrange a convenient time for your visit, and we will gladly organize a tour and provide any necessary information to ensure a productive visit.
Our Service
SteelPRO Group – manufacturer and solution provider for special steel, offering multi-industry application solutions and customised services, 100% quality free, accompanying customers in their growth!
Our Quality Control
- Roundness
- Tolerance
- Microstructure
- Non-Destructive Testing
- Destructive Testing
- Process Control
Service Integration Processing
- Welding
- Metal Fabrication
- CNC Machining
- Lathe
- Forming
