Plain bar grating, also known as plain grating, plain steel grating, smooth grating, smooth bar grating or smooth surface steel grating, is the standard type most commonly used, skid-proof to some degree. It is widely used as floors, mezzanines, stair treads, fencing, trench covers and maintenance platforms in factories, workshops, motor rooms, trolley channels, heavy loading areas, boiler equipment and heavy equipment areas, etc.