... Steel Angles equal and unequal steel 1.size: 20mm-250mm 2.Material: Q195/235/345 A36 SS400 ST37/52,S235JR 3.Length: 6m Steel ... kind of strip steel bearing the section with two orthogonal sides, it is divided into equal angle and unequal ... tower ,derrick frame and so on .3. Steel grade: Q195-235;Q235B,Q345B,SS400,SS540,ST37,ST524 ... , uniform chemical &composition,stable mechanical properties. Steel Angles