Hot-Rolled H-Beams: Formed in one pass by heating continuously cast billets or ingots in a four-roll universal mill. The process is complex, requiring high-end equipment, and is typically produced by large steel mills. Hot-rolled H-beams have a scientifically sound structure, good plasticity and flexibility, and high structural stability, making them suitable for building structures subjected to high vibration and impact loads. They also have strong resistance to natural disasters. They are easy to manufacture mechanically, allowing for intensive production, high precision, convenient installation, and easy quality assurance. They can be used to build actual house construction factories, bridge construction factories, and industrial plant construction factories. The development of steel structures has created and driven the development of hundreds of emerging industries.

High-Frequency Welded H-Beams: Cut strip steel (or plate) of suitable thickness to a suitable width, and weld the edges (flanges) and web directly on a continuous welding unit using localized high-frequency current heating. The process is relatively simple, using assembly line operations, resulting in high production efficiency. H-beams can be processed, designed, and combined in any way according to engineering projects, and special specifications can be manufactured to meet the actual needs of specific projects. The specifications of H-beams are designed economically, and their section moment, section coefficient, pressure resistance, and load-bearing capacity are far superior to hot-rolled steel of the same unit weight.

Product Performance Differences:
Hot-rolled H-beams: Dense internal structure, excellent mechanical properties (strong bending, torsional, and compressive strength), high structural stability, good overall performance, low residual stress, and good surface quality.

High-frequency welded H-beams: Due to the heat-affected zone created by welding, the mechanical properties are affected by the welding quality, and the overall mechanical properties are slightly inferior to hot-rolled steel. However, high-frequency welding results in a smaller heat-affected zone, thinner and more uniform cross-sectional walls, better cross-sectional characteristics, and higher local strength.

Time：24/07/2026 17:11:33

Answers

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