Stainless steel channel steel [1] is a long steel bar with a groove-shaped cross section. Similar to I-beams, stainless steel channel steel is also divided into ordinary channel steel and light channel steel. The model and specification are also expressed in millimeters of waist height (h) × leg width (b) × waist thickness (d). For example, 120×53×5 channel steel means waist height of 120mm. For round steel, a, b, c, etc. need to be added to the right of the model to distinguish them.