Section steel is a type of steel with a specific shape and cross-section, which is widely used in various fields due to its high stability and strength. The following are some common usage ranges of section steel:

1. 建筑結構：型鋼常用于建筑結構中的梁、柱、桁架等部分，用于支撐和承載建筑物的重量和力荷載。其強度和穩定性能使得建筑結構能夠更好地抵抗風力、地震力等外力作用。

1. Building structure: Section steel is often used in beams, columns, trusses, and other parts of building structures to support and carry the weight and load of buildings. Its strength and stability performance enable the building structure to better resist external forces such as wind and earthquake forces.

2. 橋梁工程：型鋼常用于橋梁中的主梁、支撐梁和橫梁等部位，以提供足夠的承載能力和剛度。型鋼的優勢在于可以根據橋梁設計要求進行定制，滿足不同跨度和荷載條件下的需求。

2. Bridge engineering: Section steel is often used in the main beams, support beams, and crossbeams of bridges to provide sufficient bearing capacity and stiffness. The advantage of section steel is that it can be customized according to bridge design requirements to meet the needs of different spans and load conditions.

3. 汽車制造：型鋼用于汽車底盤、車身骨架和其他結構件的制造。其高強度和剛度可以提高汽車的整體安全性能和穩定性，同時減輕車身重量，提高燃油經濟性。

3. Automotive manufacturing: Section steel is used for the manufacturing of automotive chassis, body frames, and other structural components. Its high strength and stiffness can improve the overall safety performance and stability of the car, while reducing body weight and improving fuel economy.

4. 船舶建造：型鋼在船舶建造中扮演重要角色，包括船體結構、船塢、輔助設備等。型鋼的強度和耐蝕性適合于海洋環境下的使用，并能夠滿足船舶的抗氧化、抗疲勞和抗振性能要求。

4. Ship construction: Section steel plays an important role in ship construction, including hull structure, dock, auxiliary equipment, etc. The strength and corrosion resistance of section steel are suitable for use in marine environments, and can meet the requirements of oxidation resistance, fatigue resistance, and vibration resistance of ships.

5. 機械制造：型鋼用于制造機器設備中的零部件、軸承支撐架、傳動結構等。其高強度和耐磨性可確保機械設備在運行過程中的穩定性和可靠性。

5. Mechanical manufacturing: Section steel is used to manufacture components, bearing support frames, transmission structures, etc. in machine equipment. Its high strength and wear resistance can ensure the stability and reliability of mechanical equipment during operation.

除了以上幾個領域，型鋼還廣泛應用于石油化工、電力工程、冶金建材、鐵路工程以及其他各類工業和民用領域，因其多樣的截面形狀和優異的性能特點而備受青睞。

In addition to the above fields, section steel is also widely used in petrochemical, power engineering, metallurgical building materials, railway engineering, and various other industrial and civil fields, and is highly favored due to its diverse cross-sectional shapes and excellent performance characteristics.

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