1. High structural strength and large section modulus, compared with ordinary I-beams, can save 10-15% of metal under the same bearing conditions.

2. Flexible design style, when the beam height is the same, the opening of the steel structure can be 50% larger than that of the concrete structure, making the building layout more flexible.

3. Compared with the self weight of concrete structures, the self weight of structures is lighter, which reduces the internal forces of structural design, lowers the basic treatment requirements of building structures, simplifies construction, and reduces costs.

4. The cross-sectional shape is economically reasonable, the mechanical performance is good, and the extension of each point on the cross-section is uniform during rolling. Low internal stress and large cross-sectional modulus.

5. High stability, easy to machine, using H-beam can protect the environment, high degree of industrial production, and fast construction speed.