... -Q420 Steel; 3.Width: 20mm-60mm; 4.Thickness:1mm-2mm Slotted Angles1. Material:Q195-Q420 Series2. Type:equal or unequal3. Edige ... ,easy assembly, quick installation,good stability and good looking13.Use:Slotted angles can be assembled for different kinds of goods, such ... shelves, working tables, shoes shelves and household shelves without welding. slotted angle