H-section steel is a kind of economical and efficient section with more optimized section area distribution and more reasonable strength-weight ratio, which is named for the same section as "h" . Because all parts of H-beam are arranged at right angles, H-beam has many advantages such as strong bending resistance, simple construction, low cost and light weight. The inner and outer sides of the Flange are parallel or nearly parallel, and the end of the Flange is at right angles, hence the name parallel Flange i-steel. H-beam web thickness than the same high web of ordinary i-beam, flange width than the same high web of ordinary i-beam larger, so also known as wide-flange i-beam. It can greatly improve the carrying capacity and save 10% ~ 40% of metal. H-beam has wide Flange, thin web, many specifications and flexible use. It can save metal 15% ~ 20% when used in all kinds of truss structures. Because the inner and outer sides of the Flange are parallel and the end of the Flange is at right angle, it is easy to assemble and assemble into various components, thus the welding and riveting work can be saved about 25% , and the construction speed can be greatly accelerated and the construction period can be shortened. H-section steel is widely used in various civil and industrial building structures, various large-span industrial plants and modern high-rise buildings, especially in areas with frequent seismic activity and under high temperature working conditions; It requires large-scale bridges with large bearing capacity, good cross-section stability and large span; heavy equipment; Expressway; Ship Skeleton; Mine Support; Foundation Treatment and Dam Engineering; all kinds of machine components.
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I-beam, also known as steel beam (English name Universal Beam), is a long steel with an I-shaped cross section. I-beam is divided into ordinary I-beam and light I-beam. It is an I-shaped section steel. Due to the relatively high and narrow cross-section dimensions of both normal and light i-section steel, the moment of inertia of the two principal axes of the cross-section is quite different, therefore, it can only be directly used for bending members in the web plane or to form a lattice-type force-bearing members. It is not suitable to use the axial compression member or the member which is perpendicular to the web plane or is bent, which makes its application scope is very limited. I-BEAMS are widely used in buildings and other metal structures. Due to the relatively high and narrow section size, the inertia moment of the common i-beam and the light i-beam are quite different from each other, which limits their application. The use of i-beams shall be selected according to the requirements of the design drawings. In the structural design, I beam should be selected according to its mechanical properties, chemical properties, weldability, structural size and other reasonable choice of I beam for use.
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