The stair tread grating is an application branch of the serrated grating that cuts the pressed serrated grating into a standard size according to the national standard or the national standard (user requirements) of the country where the project is located and uses a flat aluminum to weld the cutting section securely to form a rectangular Or other forms of standard framework. Use only the standard frame placed on the basis of the construction has been completed or operating platform, with a special fixed card lock can be locked. Stair tread grating has good light transmission, ventilation, anti-skid, durable characteristics, and because the stair tread structure characteristics, easy to dust or liquid drop, the surface will not accumulate dust or a variety of liquids. So stair tread grating has been widely used in a variety of staircase steps, as well as a variety of mechanical equipment maintenance platform and pedal. z