A36 Hot Rolled Flat Bar
Flat steel is a long strip of steel with a rectangular or trapezoidal cross-sectional shape, and together with steel products such as round steel, angle steel, and I-beams, it forms a part of the steel family. It is made by processing steel plates, hot-rolled or cold-rolled, with common specifications ranging from 10mm to 100mm in width and 2mm to 20mm in thickness.
Flat steel is a long strip of steel with a rectangular or trapezoidal cross-sectional shape, and together with steel products such as round steel, angle steel, and I-beams, it forms a part of the steel family.
It is made by processing steel plates, hot-rolled or cold-rolled, with common specifications ranging from 10mm to 100mm in width and 2mm to 20mm in thickness.
Flat steel can be divided into two types based on production processes and uses: hot-rolled flat steel and cold-rolled flat steel. Among them, hot-rolled flat steel has a smoother surface with some slight oxidation.
The surface of cold-rolled flat steel is relatively rough, but it has higher hardness and better tensile and bending properties.
Comparison Between Hot-Rolled and Cold-Rolled Flat Steel
| Property | Hot-Rolled Flat Steel | Cold-Rolled Flat Steel | Advantage of Hot-Rolled |
|---|---|---|---|
| Production Process | Rolled at high temperatures (above recrystallization point) | Rolled at room temperature after hot-rolling | Lower energy consumption, faster production |
| Surface Finish | Slightly scaled but smooth after treatment | Very smooth and precise | More cost-effective for applications where ultra-smoothness isn't critical |
| Dimensional Tolerance | Less precise (±0.1–0.5mm) | Highly precise (±0.02–0.1mm) | Better suited for structural applications where exact dimensions are less critical |
| Mechanical Strength | Good strength, lower hardness | Higher hardness and strength | More ductile, easier to weld and form without cracking |
| Formability | Excellent for bending and shaping | Less ductile, prone to cracking when bent | Superior workability for heavy fabrication |
| Internal Stress | Minimal residual stress | Higher residual stress from cold-working | Less likely to warp or distort over time |
| Cost | Lower production cost | Higher cost due to additional processing | More economical for large-scale projects |
| Common Applications | Structural beams, frames, railroad tracks | Precision parts, automotive panels, appliances | Ideal for construction and heavy machinery, where strength and cost matter most |
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Product application
A36 Hot Rolled Flat Bars are widely used in construction, machinery manufacturing, and other fields.
Main Applications:
- Building Structures: Used in building frames, steel structures, bridges, factory construction, etc., as supports and connectors.
- Machinery Manufacturing: Used to manufacture machine parts, tools, molds, etc., utilizing its excellent machinability.
- Other Fields: Also suitable for applications requiring a certain level of strength and toughness, such as vehicle manufacturing and shipbuilding.
certification
Our Company
Tangshan Zhenxiang International Trading Co., Ltd.
Established in 2002, Tangshan Zhenxiang Group has grown into a leading steel processing enterprise through strategic expansion and vertical integration. Our key milestones include:
2008: Capitalized on the financial crisis to acquire neighboring steel mills, establishing ourselves as Hebei Province's premier flat steel manufacturer
2012: Successfully registered the "Zhenxiang" trademark, marking our brand's formal recognition
2017: Commissioned our 70,000-square-meter logistics center, significantly enhancing our distribution capabilities
After two decades of continuous development, Zhenxiang Group has evolved into an integrated steel service provider offering:
✓ Precision plate and strip longitudinal shearing
✓ Hot-dip galvanizing processing
✓ Machinery procurement and trading
✓ Comprehensive logistics solutions
Key advantages:
• Hebei's largest flat steel production capacity
• Complete industrial chain integration
• 70,000m² modern logistics infrastructure
• Certified quality management systems
Why Choose US?
- Large enterprise scale
- Wide application of technology
- High quality customized services
- Advanced equipment
- Professional team
- One-stop solution
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