Stainless steel channel steel is a long strip of steel with a groove-shaped cross-section. Same as the I-beam, stainless steel channel steel is also divided into ordinary channel steel and light channel steel. The representation method of model and specification is also represented by waist height (h) × leg width (b) × waist thickness (d) in millimeters. Such as 120 × 53 × 5 channel steel, that is, waist height 120mm, round steel, need to add a, b, c, etc. on the right side of the model to distinguish. Usually, the stainless steel channel steel is expressed in centimeters of the waist height, such as the above channel steel is called 12# channel steel. The specification range of channel steel is 5-40#. Including and marking requirements shall be implemented according to the provisions of GB2101-80.