H-beams are mainly divided into hot-rolled H-beams and welded H-beams, of which hot-rolled H-beams can be reasonably allocated according to the height to width ratio of the cross-sectional size for different purposes, so they have excellent mechanical properties and superior use properties. Secondly, the structure of hot-rolled H-beams is light in weight, so the cost of construction is low. Compared with welded H-beams, it can significantly save labour and materials, reduce the consumption of raw materials, energy and labour, low residual stress, and good appearance and surface quality. And the steel structure based on hot-rolled H-beams has a scientific and reasonable structure, good plasticity and flexibility, high structural stability, suitable for building structures that bear high vibration and impact loads, and strong resistance to natural disasters. More importantly, the use of H-beams can effectively protect the environment.

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