Flat Steel
Parameters & Standards
| Thickness | 1.5–60 mm (hot-rolled); 1–16 mm (cold-rolled). |
| Width | 10–300 mm (hot-rolled); 10–300 mm (cold-rolled). |
| Length | Standard 6m, customizable. |
GB/T 704、GB/T 6723
ASTM A36、ASTM A240
Types of Flat Steel
● Hot-rolled Flat Steel
Formed through high-temperature rolling process, the surface is relatively rough.
● Cold-rolled Flat Steel
Rolling at room temperature, smooth surface, high dimensional accuracy.
● Stainless Steel Flat Bar
Strong corrosion resistance, suitable for the food or chemical industry.
● Carbon Steel Flat Bar
High strength and low cost, widely used in structural components.
● Alloy Steel Flat Bar
Contains elements such as chromium and nickel to enhance wear resistance or high temperature resistance.
Features & Advantage
● Features
- Rectangular cross-section, long strip with straight or rounded edges.
- Surface may be hot-rolled (oxide layer) or cold-rolled (smooth).
● Advantages
- High strength, easy to cut, weld, and drill.
- Cost-effective for mass production.
- Corrosion-resistant (stainless steel) or heat-resistant (alloy steel).
Materials
● Common Carbon Steel*: Q235 (GB), ASTM A36 (International).
● Medium Carbon Steel*: 45 Steel, used for mechanical parts.
● Stainless Steel*: 304, 316 (AISI), corrosion-resistant.
● Alloy Steel*: 40Cr, 42CrMo (with Cr, Mo).
Applications
● Construction (beams, brackets)
● Machinery (shafts, linkages) .
● Automotive (chassis, body parts)
● Shipbuilding & bridge structures
● Hardware tools & furniture frames
Process Advantages and Material Selection Guidelines
Advanced high-speed rolling and controlled cooling technologies ensure dimensional precision (±0.1 mm) and microstructural homogeneity, supporting downstream processes like drawing and heat treatment. Material selection must comply with industry standards (ASTM, GB/T, JIS), prioritizing carbon content, elongation, and surface defect control.
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