What is the difference between H-beam and I-beam?

What is the difference between H-beam and I-beam?

H-beam is a highly efficient economic cutting profile (there are other cold-formed thin-walled steel, steel plate, etc.), due to reasonable cross-sectional shape, they can make steel to achieve higher performance and improve carrying capacity. Unlike the ordinary I-beam, the h-shaped steel flange is widened, and the inner and outer surfaces are usually parallel, which facilitates connection with high strength bolts and other components. Its size constitutes a series of reasonable, complete model, easy to design selection.

I-beam, whether normal or light, because the cross-sectional size are relatively high, narrow, so the cross-section of the two main sleeve of the moment of inertia difference between the larger. Therefore, it is generally only used directly for members that are bent in the plane of their webs or to form a lattice-type force member. It is not advisable for the axial compression members or the components that are curved in the plane perpendicular to the web, which makes it very limited in scope of application.

H-beam flange are equal thickness, there are rolling cross-section, there are three plates welded by the composition of the cross-section. I-beam are rolling cross-section, due to poor production process, the edge of the edge of a 1:10 slope. H-beam rolling is different from the ordinary I-beam only with a set of horizontal roll, because of its wide flange and no slope (or slope is very small), it is necessary to add a set of vertical. Therefore, its rolling process and equipment are more complex than ordinary rolling mill. Domestic can produce the largest rolling h-beam height of 800mm, more than only the combination of welding cross-section. China’s hot-rolled H-beam GB (GB / T11263-1998) H-section is divided into narrow flange, wide flange and steel pile three, the code were hz, hk and hu. Narrow flange H-beam for beam or bending members, and wide flange h-shaped steel and h-shaped steel piles, for axial compression components or bending members. I-beam compared with H-beam, and other weight under the premise of w, ix, iy are not as h-shaped steel.

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