steel angle 50*50*5mm Steel Grade:Q195,Q235,Q345,Q420,ASTM A36,SS400/ ... *200*24mm L:5.8-12m or customized. steel angle 50*50*6mm1. Standard: GB /T9787,ASTM,JIS,EN,DIN2. Steel Grade ... tower, lifting transportation machinery, the ships, the industrial furnace,container frame and warehouse shelves, etc..8.Delivery time : within 20 days ...