Hot Roll Mild Steel Perforated Sheet A36 025 thick x 025 Holes x 0375 Stagger is often used for architectural details, ventilating, and furniture Hot Roll Mild Steel Perforated Sheet A36 offers good weldability, machinability, and can be heat treated to harden its surface Unlike cold rolled steel, Hot Rolled Steel has a rougher surface and with galvanization, it can resist corrosion well