槽钢的上下腿宽相等，截面呈槽形，槽钢规格型号的表示方法是以高度（mm）×腿宽（mm）×腰厚（mm）的形式表示。
角钢是断面呈直角、两边厚度、宽度基本相同的钢材，角钢的规格表示方法通常是以边宽×边厚来表示。
The upper and lower legs of channel steel are equal in width, and the section is in groove shape. The specification and model of channel steel is expressed in height (mm) × Leg width (mm) × Waist thickness (mm).
Angle steel is steel with right section and basically the same thickness and width on both sides. The specification of angle steel is usually expressed by side width × Edge thickness.