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Single single universal joint axle shaft: What's the difference between H-beam and I-beam?

Views: 0     Author: Site Editor     Publish Time: 2022-11-14      Origin: Site

It is often asked that the shape of I-beam and H-beam is similar. How to choose it in practice? Many people who have worked in the construction industry for many years cannot explain.

Here for you to do a detailed answer: many people think that I-beam is the domestic name, H-beam is the foreign name, in fact, this cognition is wrong. H-beam and I-beam are different in shape, as shown in the picture below:

Single single universal joint axle shaft: the difference between H-beam and I-beam

1. I beam steel

I - beams are mainly divided into ordinary I - beams, light I - beams and wide flanged I - beams. According to the height ratio of flange and web, it can be divided into wide, medium and narrow wide flange I-beams. The specifications of the first two are 10-60, that is, the corresponding height is 10-60cm.

At the same height, lightweight I-beams have narrow flanges, thin webs and light weight. Wide flanged I-beams, also known as H-beams, are characterized by parallel legs and no inclination inside the legs. It belongs to the economic section steel, is rolled on the four-high universal mill, so it is also called "universal I-beam". Ordinary I - beams and light - duty I - beams have formed national standards.

As the name indicates, I-beam is a kind of "work" type section steel. The inner surface of the upper and lower flange has a inclination, which is generally 1:6, making the outer flange thin and the inner flange thick. Therefore, the section characteristics of I-beam in the two main planes are very different, and it is difficult to play the strength characteristics of steel in the application. Although the I-beam market has also appeared the thickened I-beam, but the structure of the I-beam has determined its torsional performance of the short plate.

2. H section steel

H-section steel is an economical and efficient profile with more optimized section area distribution and more reasonable strength-to-weight ratio. It is named because its section is the same as the English letter "H". Because all parts of H-beam are arranged at right angles, H-beam has been widely used for its advantages of strong bending resistance, simple construction, cost saving and light structural weight in all directions.

H beam is a widely used profile in today's steel structure construction. It has many differences from I beam. The first is flange, and the second flange inner surface has no inclination, and the upper and lower surfaces are parallel. The section characteristic of H beam is obviously better than that of traditional I beam, channel steel and Angle steel.

The outer inner sides of the H-beam have no inclination and are flat and straight. This makes the welding and splicing of H-beam steel easier to operate than I-beam steel, has better mechanical properties per unit weight, and can save a lot of materials and construction time. The section of I-beam is good for direct pressure and tensile resistance, but the section size cannot resist torsion because the wing plate is too narrow. H steel on the contrary, both has advantages and disadvantages.

3. The difference between H beam and I beam and the description of its use:single double universal joint wheel shaft for sale - xinsanming

1)  Whether the I-section steel is ordinary or light, because the section size is relatively high and narrow, the inertia moment of the two main spindles of the section is relatively different. Therefore, generally, it can only be directly used in the bending members in the web plane or it can be composed of lattice stressed members. It is not suitable for the axial compression member or the bending member perpendicular to the web plane, which makes its application scope, has a great limitation.

2)  H-beam steel is an efficient and economical section profile (there are other cold-formed thin-wall steel, profited steel plate, etc.). Due to the reasonable section shape, they can make the steel more efficient and improve the capacity of bearing. Unlike regular I-beams, the flanges of H-beams are widened and the inner and outer surfaces are usually parallel, allowing for easy connection with high-strength bolts. Its size constitutes a reasonable series, complete models, easy to design selection (in addition to crane beam with Gongzi steel).

3)  The flange of H-beam steel is of equal thickness, and there are rolled sections and combined sections composed of 3 plates welded. I-beams are rolled sections. Because of poor production technology, the inner edge of the flange has a 1:10 slope. The rolling process of H-beam steel is different from that of ordinary I-beam steel, which only uses one set of horizontal rolls. Because of its wide flange and no inclination (or small inclination), it is necessary to add a set of vertical rolls for rolling at the same time. Therefore, its rolling process and equipment are more complex than ordinary rolling mill. The maximum height of rolled H-beam steel that can be produced in China is 800mm, which exceeds the welded sectional section only.

4)  I-beam side length is small, the height is large, can only withstand a single direction of the force.

5)  H-section steel groove is deep and thick, which can withstand the force in two directions.

6)  With the development of steel structure building needs, only I-beam is not enough, but also thickened I-beam, used for bearing columns easy to lose stability.

7)  I-beams can only be used for beams, while H-beams can only be used for structural load-bearing columns.

8)  H section steel is a kind of economic section steel with better mechanical properties than I-beam steel. It is named because its section shape is the same as the English letter "H". The flange of hot rolled H-beam is wider than that of I-beam, and the lateral stiffness and bending resistance are higher. Under the same specification, H-beam steel has lighter texture weight than I-beam steel.

9)  The I-beam flange is thick by the web section and thin outside; The flange of H-beam is of equal section.

10)  H-beam is divided into hot rolled and welded. HW refers to wide flange H-beam, such as HW300x300, indicating that the section height and width are both 300mm; HN is H-shaped steel with narrow flanges, such as HN300x150, indicating a section height of 300 and a width of 150. HM has flange widths in between, such as HM300x200. HW, HN and HM are all section types of hot rolled H-beams. We can write BH for welding.

11)  HW is H-beam height and flange width are basically equal; It is mainly used for steel core column in reinforced concrete frame structure column, also known as stiffening steel column; Used mainly for columns in steel structures.

12)  The ratio between the height and flange width of HM H-beam is roughly 1.33~1.75; mainly in steel structure: used as steel frame column, used as frame beam in dynamic load bearing frame structure.

13)  HN is a ratio of H-beam height to flange width greater than or equal to 2, which is mainly used for beams; the use of I-beams is equivalent to that of HN beams.


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  : +86 29 86033971
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  : The Innovation Industrial Park, No.36, Jingwei Road ,Xi'an Economic and Technological Development Zone,Xi'an City,Shaanxi Province,China
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