Hot Rolled Steel Plate
Our hot rolled steel plates are sourced directly from qualified mills. We check the chemical composition, mechanical properties, and surface condition of each batch before shipment to keep the material consistent with the specified requirements.
We supply commonly used grades including ASTM A36, A572, EN S235, S275 and S355, JIS SS400, and GB Q235 and Q355. Other grades can be supplied on request.
The plates are used for bridges, warehouses, machinery components, structural steelwork, and other industrial projects. Different thicknesses and sizes are available depending on the application and order requirements.
Hot Rolled Steel Plate Grades
Hot rolled steel plate can be classified by carbon content as low-carbon steel (C ≤ 0.25%), medium-carbon steel (C 0.25–0.60%), and high-carbon steel (C ≥ 0.60%). Based on alloy content, it can be divided into low-alloy steel, with a total alloy content of up to 5%, and medium- and high-alloy steel.
These steels offer good ductility and toughness, along with good machinability and weldability, making them suitable for a wide range of structural and industrial applications.
Compared with cold-rolled steel plate, hot rolled steel plate is processed at higher temperatures, offers a wider thickness range, but has a rougher surface finish and can be as thin as 0.78 mm.
Hot Rolled Steel Plate Specifications：
| Item | Specification |
|---|---|
| Product | Hot Rolled Steel Plate |
| Grade | Q235, Q355, ASTM A36, A572, S235, S275, S355, SS400 |
| Thickness | 0.78–300 mm |
| Width | Customized |
| Length | Customized |
| Standard | GB/T 709, ASTM, EN, JIS |
| Surface | Hot Rolled / Mill Finish |
| Edge | Mill Edge / Cut Edge |
| Delivery Condition | As Rolled |
| Application | Construction, Machinery, Bridges, Structural Steelwork |
Hot Rolled vs. Cold Rolled Steel Plate
Hot rolled and cold rolled steel plates differ in production method, surface finish, dimensional accuracy, and mechanical properties.
| Feature | Hot Rolled Steel Plate | Cold Rolled Steel Plate |
|---|---|---|
| Rolling Process | Rolled at high temperatures | Rolled at room temperature |
| Thickness | Generally available in thicker sections | Mainly used for thinner sections |
| Surface Finish | Rougher surface with mill scale | Smoother and cleaner surface |
| Dimensional Accuracy | Moderate | Higher |
| Ductility | Generally higher | Lower after work hardening |
| Strength | Lower in the as-rolled condition | Higher due to work hardening |
| Formability | Good | Good, depending on grade |
| Cost | Generally lower | Generally higher |
| Common Applications | Structural steel, machinery, bridges, construction | Automotive parts, appliances, precision components |
Hot rolled steel plate is commonly used for heavy structural work, while cold rolled steel is used for applications requiring a smoother surface and tighter dimensional tolerances.
Applications
Hot rolled steel plates are used for shipbuilding, automotive frames and beams, bridges, machinery, pressure vessels, and other structural components. They are commonly supplied in thicknesses of 4 mm and above for heavy-duty applications.
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