The flange of h-beam is parallel or close to the plane, flange ends are at right angles, hence the name parallel flange I-steel. The web thickness of H-beam is smaller than the ordinary I-steel with the same height of the web, and the flange width is larger than the ordinary I-steel with the same height of the web, so it is also named wide flange I-steel. Determined by the shape, the section modulus, moment of inertia and corresponding strength of H-beam are obviously superior to ordinary I-beam with the same single weight. When used in different metal structures with different requirements, it shows its superior performance no matter under bending moment, pressure load and eccentric load. H-beam has wide flange, thin web, many specifications and flexible use, which can save 15% ~ 20% of metal in all kinds of truss structures. Because the flange inside and outside is parallel, the edge end is a right Angle, easy to assemble and combine into various components, thus can save about 25% of the workload of welding, riveting, can greatly accelerate the construction speed of the project, shorten the construction period.
Due to the above advantages, H-beam is widely used, mainly for: various civil and industrial building structures; Various large-span industrial plants and modern high-rise buildings, especially those in areas with frequent seismic activity and under high temperature working conditions; Large bridge with large bearing capacity, good section stability and large span is required. Heavy equipment; Highways; Ship skeleton; Mine support; Foundation treatment and embankment works; Various machine components.
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