The primary characteristics of hot-rolled products include high strength, excellent toughness, and good ductility.
1. Steel Plates
Steel plates are a major type of hot-rolled product, characterized by the following features:
- High Strength: Due to the high-temperature rolling and subsequent cooling processes, steel plates possess high density and a fine-grained structure, resulting in high tensile strength.
- Good Wear Resistance: After hot rolling, steel plates feature a smooth surface with high surface hardness, endowing them with strong wear resistance and making them suitable for the manufacture of wear-resistant components.
- Good Ductility: Steel plates exhibit excellent ductility, making them well-suited for manufacturing applications such as pressure vessels, ships, and bridges.
2. Steel Pipes
Steel pipes are another common hot-rolled product, characterized by the following features:
- High Internal Quality: Since the hot-rolling process helps minimize defects and ensures high material purity, hot-rolled steel pipes possess superior internal quality.
- Good Homogeneity: Hot-rolled steel pipes are relatively easy to manufacture, allowing for the production of pipes with consistent dimensions and, consequently, excellent homogeneity.
- Good Ductility: Similar to steel plates, hot-rolled steel pipes demonstrate good ductility, making them suitable for applications in sectors such as oil and natural gas.
3. Steel Strips
Steel strips are also a common hot-rolled product, characterized by the following features:
- Greater Thickness: Hot-rolled steel strips are typically thicker in gauge, enabling them to meet a wide range of production requirements.
- Good Homogeneity: Due to the ease of manufacturing, hot-rolled steel strips are well-suited for mass production, resulting in excellent product homogeneity.
- Good Bendability: As they are processed under heat during manufacturing, hot-rolled steel strips possess high strength and good ductility; this endows them with excellent bending properties, making them ideal for the production of stamped or punched parts.