steel angle 50*50*5mm Steel Grade:Q195,Q235,Q345,Q420,ASTM A36,SS400/SS540 size: ... *3-200*200*24mm L:5.8-12m or customized. steel angle 50*50*6mm1. Standard: GB /T9787,ASTM,JIS,EN ... ,DIN2. Steel Grade:Q195,Q235,Q345,Q420,ASTM A36,SS400/SS5403. Length ...