Among stainless steel profiles, there are two profiles that are easy to mistake, namely stainless steel H-shaped steel and stainless steel I-shaped steel. In fact, they are different in shape. Let’s talk about the specific differences below.

Stainless steel I-beam is a kind of "I"-shaped cross-section steel. The inner surface of the upper and lower flanges has an inclination, usually 1:6, which makes the flange thin on the outside and thick on the inside. This causes the stainless steel I-beam to be in two main planes. The cross-sectional properties of steel are very different, and it is difficult to exert the strength properties of steel in applications. Although stainless steel thickened I-beams are also available in the I-beam market, the structure of the I-beam has determined that its torsional resistance is weak.

H-shaped steel is currently a widely used profile in steel structure buildings, and there are still many differences compared to I-beam. The first is the flange, and secondly the inner surface of the flange has no inclination, and the upper and lower surfaces are parallel. The cross-sectional properties of H-shaped steel are better than traditional I-beam, channel steel and angle steel. It is an economical cross-section and high-efficiency profile with more optimized cross-sectional area distribution and more reasonable strength-to-weight ratio.

Whether I-shaped steel is ordinary or light, because the cross-section size is relatively high and narrow, the moment of inertia of the two main sleeves of the cross-section is quite different, so it can usually only be used directly for bending in the plane of its web. components or form them into lattice-type stressed components. It is not suitable for axial compression members or members that are bent perpendicular to the web plane, which greatly limits its application range.

H-shaped steel is an efficient and economical section profile. Because of its reasonable cross-sectional shape, it can enable stainless steel materials to perform better and enhance load-bearing capacity. Different from the ordinary I-shaped steel, the flange of the H-shaped steel is widened, and the inner and outer surfaces are generally parallel, which makes it easy to connect with other components with high-strength bolts. Its size constitutes a reasonable series with complete models, which is convenient for design and selection.

The flanges of H-shaped steel are all of equal thickness, with either rolled sections or combined sections composed of three plates welded together. I-beams are all rolled sections. Due to poor production technology, the inner edge of the flange has a slope of 1:10. The rolling of H-shaped steel is different from that of ordinary I-shaped steel, which only uses a set of horizontal rollers. Because its flange is wide and has no slope, a set of vertical rollers must be added to perform rolling at the same time. Therefore, its rolling process and equipment All are more complex than ordinary rolling mills. The maximum height of rolled H-shaped steel that can be produced in China is 800mm. If it exceeds the height, it can only be welded and combined.

With the development needs of steel structure buildings, it is not feasible to only use I-beams. Thicker I-beams are prone to instability when used in load-bearing columns. I-beams can only be used for beams, while H-beams can only be used for load-bearing columns of structures.