Explanation

It is also called steel beam, and the section shape is I-shaped (I-shaped) section steel. The specification of I-beam (GB/T706-2008) is expressed by waist height (cm) (for example, the waist height of No. 12 I-beam is 12cm). If the waist height is the same but the leg width and waist thickness are different, a, b and c shall be used to distinguish them. The difference between I-beam and H section steel is that its legs gradually become thinner from the root to the outer edge. The difference between I-beam and rail steel is that their upper and lower legs are the same width. I-beam is generally produced by hot rolling. I-beam is widely used in engineering structures of bridges, buildings, vehicles and mines.

Classification