描述
产品描述 / Product Description
中文：
热轧圆钢经高温轧制而成，表面保留氧化层，具有高强度和良好的机械加工性能，广泛用于建筑、机械制造及通用零部件。
English:
Hot rolled round bars are produced through high-temperature rolling with mill scale surface, offering high strength and machinability. Widely used in construction, machinery, and general components.
产品规格书 / Product Specifications
1. 基本参数 / Basic Parameters
| 项目/Item |
参数/Value |
| 材质/Material |
Q235, 45#, SS400, S355JR等 |
| 直径范围/Diameter |
Φ10mm – Φ300mm |
| 长度/Length |
6m定尺或定制 (6m standard or customized) |
2. 化学成分（%）/ Chemical Composition (%)
| 元素/Element |
Q235 |
45# |
S355JR |
| 碳 (C) |
≤0.22 |
0.42-0.50 |
≤0.24 |
| 硅 (Si) |
≤0.35 |
0.17-0.37 |
≤0.55 |
| 锰 (Mn) |
0.30-0.65 |
0.50-0.80 |
≤1.60 |
3. 机械性能 / Mechanical Properties
| 性能/Property |
Q235 |
45# |
S355JR |
| 抗拉强度 (Tensile Strength) |
370-500 MPa |
600-800 MPa |
470-630 MPa |
| 屈服强度 (Yield Strength) |
≥235 MPa |
≥355 MPa |
≥355 MPa |
| 延伸率 (Elongation) |
≥26% |
≥16% |
≥22% |
4. 执行标准 / Standards
- 中国标准 (GB): GB/T 702, GB/T 699
- 国际标准: ASTM A36, EN 10025-2
