What are the common classifications of steel structure profiles?

In the field of steel structure, the classification of profiles is more extensive, and the main profiles in the field of construction include the following：
1. I-beam
The cross section of I-beam is in the shape of "I", with wide flanges and narrow webs. It is mainly used in structures that bear large bending moments, and is commonly seen in high-rise buildings, bridges, and large equipment supports. It has a strong bearing capacity and is suitable for places with large bending and has good bending resistance.

2. Angle steel (L-beam steel)
The cross section of angle steel is in the shape of "L", and is mainly used for connecting, supporting and strengthening structures. Angle steel is generally used for support, beam-column connection and other parts in frame structures. According to different engineering requirements, angle steel can have different side lengths and thicknesses, and is suitable for light steel structures and building structures.

3. Channel steel (U-beam steel)
The cross section of channel steel is in the shape of "U", and is often used for structural parts under load such as support and structure. Due to its good bearing capacity for bending and shear force, channel steel is widely used in steel structures and steel frame structures, and is often used to support beams, columns, roof trusses, etc.

4. C-beam steel
The cross section of C-shaped steel is "C" shaped and is widely used in light steel structures, such as workshops, warehouses, roof structures, etc. It has good bending strength and shear resistance, and is suitable for building roof trusses and structural frames. C-shaped steel is common in cold-formed steel and is a very important component of light steel structures.

5. Z-beam steel
The cross section of Z-shaped steel is "Z" shaped, with high bending strength and shear resistance. It is mainly used for heavy structures and bearing large forces. Z-shaped steel is generally used in roof structures, floor decking, wall supports, etc. It is similar to C-shaped steel, but it differs in connection and force.

6. H-beam
The cross section of H-shaped steel is "H" shaped, with wide and parallel flanges and relatively thick webs. H-shaped steel has high strength and good stability, and is widely used in high-rise buildings, large bridges, steel structure workshops, etc. It has excellent bearing capacity and is suitable for structures that bear heavy loads and complex mechanical environments.