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Hot Rolled Steel Sheet & Coil
Hot Rolled Steel Sheet & Coil
Hot rolled steel sheets and coils (HRC)—also known as HR steel sheets, hot rolled mild steel sheets, and flat hot rolled steel—are produced by rolling steel slabs at high temperatures, typically between 1000–1700°F (540–930°C). This process enhances plasticity and eliminates the need for secondary heating. As the steel cools, it normalizes naturally, reducing internal stress.
Hot Rolled Steel Sheet features a rough mill scale surface and relatively loose dimensional tolerances. Though not visually refined, it offers solid mechanical performance.
Hot Rolled Steel Coil is produced by coiling sheets after hot rolling. It has a bluish-black, oily surface. Prioritizing strength over appearance or precision, it’s a cost-effective choice for construction, automotive chassis, machinery, pipelines, and pressure vessels.
Specifications of Hot Rolled Steel Sheets & Coils
| Parameter | Hot Rolled Steel Sheet | Hot Rolled Steel Coil |
| Thickness (mm) | 1.0 – 20.0 | 2.0 – 25.0 |
| Width (mm) | 600 – 2000 | 600 – 2100 |
| Length (m) | 2 – 12 | Coil length varies by weight |
| Coil Weight (tons) | N/A | 3 – 30 |
| Surface Finish | Mill scale (oxidized) | Mill scale with light oil coating |
| Steel Grades | A36, SPHC, S235, S355, etc. | A36, SPHC, S235, S355, etc. |
| Standards | ASTM, JIS, EN, AS/NZS 1594 | ASTM, JIS, EN, AS/NZS 1594 |
| Tolerance | Thickness ±0.2 mm, Width ±3 mm | Thickness ±0.3 mm, Width ±5 mm |
| Surface Treatment | Pickling (optional) | Pickling, Oiling (optional) |
| Processing Options | Cut to size, Slitting | Cut to size, Slitting |
| Packaging | Paper edge protectors, steel strapping, plastic film wrapping | Edge protection, steel strapping, plastic film wrapping |
Quality Certification
Hot-Rolled Steel Applications
Construction: Used in beams, columns, wall panels, and structural frames for buildings.
Automotive: HR steel sheet for chassis parts, subframes, reinforcements, and trailer structures.
Infrastructure: Ideal for bridges, rail systems, highways, and large public structures.
Oil & Gas: Used in pipelines, tanks, and offshore platform components under high pressure.
Heavy Equipment: Flat hot-rolled steel is used in buckets, blades, and structural components.
Household & Consumer Goods: Supports appliance housings, metal furniture, and storage systems.
More Details About Zhaojian Steel Products
Key Features
Premium Packaging
Steel straps with buckles and protective corners provide export-grade protection for safe transport.
High Capacity & Fast Delivery
Multiple hot rolling lines guarantee stable supply, supporting large orders and tight deadlines.
Custom Processing Support
Offers services like slitting, leveling, and cutting to meet diverse processing needs.
Hot Rolled Steel Coil & Sheet Manufacturing Process
- Heating:Steel slabs or billets are heated to 1100–1250 °C in a furnace above the recrystallization temperature to ensure plasticity.
- Descaling: High-pressure water jets remove surface scale (oxide layer) before rolling to improve surface quality.
- Rough & Finish Rolling: The heated slab passes through 4–15 rolling stands, reducing thickness while keeping temperatures above 900 °C.
- Laminar Cooling: After laminar cooling, the strip undergoes leveling to relieve internal stress and improve flatness.
- Coiling or Cutting: The steel is either coiled into rolls (for coils) or cut into flat lengths (for plates and sheets).
- Surface Treatment (Optional): Depending on the application, optional treatments include acid pickling, eco-pickling, or light skin passing to enhance surface finish.
Frequently Asked Questions
Got questions about sheet metal? We’ve compiled answers to the most common inquiries to give you all the information you need.
Yes, we can provide cut-to-length and slitting according to your specifications.
Yes, hot-rolled steel has good formability and weldability, making it suitable for bending, stamping, and welding applications.
Products are secured with steel strapping, edge protectors, and plastic film wrapping to prevent rust and damage during shipping.
Lead times vary by order size and stock availability but typically range from 2 to 6 weeks.
