perforated steel angle Steel Grade:Q195,Q235,Q345,Q420,ASTM A36,SS400/SS540 ... *24mm L:5.8-12m or customized perforated steel angle 1. Standard: GB /T9787,ASTM,JIS,EN,DIN2. Steel Grade:Q195,Q235 ... it, that's the advantage of the dealer.:) perforated steel angle