... service, best price 2.material: Q235B, Q345B, SS400, S235JR, S275JR and s355jr 3.Standard: JIS, GB,ASTM... steel angle1.equal angle, ... Framework of all kinds of construction and engineering- Construction joist- Iron tower- Derrick frame and so on5.Descriptions- Definition: Angle ... equal angle.- Unequal angle: The kind one border long and another short is unequal angle.- Its specification is described ...