Structural Steel Plate ASTM A572 gr.50 or equivalent GB Q345B, SM490YA/YB, BS EN S355, DIN 17100 St52-3[Feb. 9, 2009 19:45:09]
Steel Plates for Structural Use, usually for Building a bridge, making a trailer trucks, etc. Available in :
5' x 20', 6' x 20'
8' x 20', 8' x 30'