What specifications of steel are used in steel frame structures?

As an important structural form in modern buildings, steel frame structures are widely used in large public buildings, high-rise buildings, industrial plants and special construction projects for their high strength, light weight, corrosion resistance and flexible design. The steel used in steel structure buildings has various specifications to meet the needs of different structures and functions.

Specifications of steel for building steel frame structures

In building steel structures, commonly used types of steel include angle steel, I-beams, channels, round tubes and square tubes, etc. Each type of steel has its specific cross-sectional shape and specification size.

Angle steel: Angle steel is a steel with an L-shaped cross-section, which is commonly used in support, building accessories, light doors and windows, towers and other fields. Its specifications are diverse, such as 5050, 6363, 7575, 100100, etc., and the thickness ranges from 5mm to 10mm. Angle steel can be used as a node connector in steel structures, and can also be used to make short beams in beam structures.

I-beam: I-beam is a kind of steel with I-shaped cross-section, with right angles at the bottom and normals on both sides. It is suitable for bridges, factories, elevated roads, ships and other fields. Common I-beam specifications are 10050, 12560, 15075, 200100, etc., and the thickness is generally 5mm to 12mm. In steel structures, I-beams are often used for the main beams and side beams of beam structures, or as supporting structures for columns.

Channel steel: Channel steel is a kind of steel with U-shaped cross-section, which is commonly used in building structures, bridges, pipelines, power towers and other fields. The specifications of channel steel include 5025, 7540, 10050, 12565, etc., with a thickness range of 3.0mm to 10mm. In steel structures, channel steel is usually used for the base of beam structures, or combined with I-beams into rectangular steel pipes to enhance the stability and bearing capacity of the structure.

Round pipe: Round pipe is a kind of steel with a circular cross-section, which is widely used in industrial manufacturing, building structures, automobile manufacturing and other fields. Commonly used round tube specifications include φ25, φ32, φ48, φ60, etc., and the wall thickness is generally between 2.0mm and 6mm. In steel structures, round tubes are often used to make components of various shapes, such as columns, beams, supports, brackets, etc.

Square tube: Square tube is a steel with a square or rectangular cross-section, commonly used in building structures, bridges, load frames, enclosures and other fields. Commonly used square tube specifications include 3030, 4040, 5050, 6040, etc., with a wall thickness range of 2.0mm to 6mm. Square tubes can be made into components of various shapes in steel structures to meet diverse building needs.

Application advantages of steel frame structure

The reason why steel frame structure can be widely used in the construction field is mainly due to its unique advantages:

High strength: Steel frame structure has high strength and rigidity, can withstand large loads, and has excellent seismic performance.

Lightweight: Steel structure is light in weight, which can reduce the weight of the building, reduce the bearing pressure of the foundation, and facilitate transportation and installation.

Corrosion resistance: Steel frame structure has good corrosion resistance, which can extend service life and reduce maintenance costs.

Flexible design: Steel frame structure can be flexibly designed and constructed to meet different building needs and space layouts.

The steel specifications used in building steel frame structures are diverse, and each specification has its specific application scenarios and advantages. In actual projects, appropriate steel specifications should be selected according to specific needs and conditions to ensure the safe, reliable and efficient use of steel structures. With the continuous advancement of industrialization and urbanization, steel frame structure, as an important building material, will play a more important role in future construction projects.