High-strength low-alloy structural steel plate, thick 8~300mm A572Gr50 high strength low alloy structural steel is widely used in engineering structures, such as the construction of steel structures, construction machinery, mining machinery, heavy-duty trucks, bridges, pressure vessels, especially for good weldability and toughness of the architectural and engineering mechanical components. A572Gr50 is a low alloyed steel, for steel structures. Alloy content than S355Jr. Our company can provide A572Gr50 plates and profiles or steel into semi-finished products according to your needs. http://www.sellsteels.com/steel-plate/A572Gr50.html