Plug-in steel grating is also called pressed lock steel grating. It is a kind of steel grating distinguished according to different manufacturing methods. It is the steel grating that is fixed by pressing the cross bar into the bearing flat steel or the bearing flat steel with pre-slot through pressure at each intersection of the bearing flat steel and the cross bar. The cross bar of the press lock steel grating is usually flat steel. The welding point of the plug-in steel grating is firm, the hole spacing is uniform, the design is beautiful, convenient and practical. The plug-in steel grating has the characteristics of high strength, corrosion resistance and maintenance-free of ordinary steel grating, and also has the characteristics of uniform and precise combination, light and exquisite structure, natural harmony and elegant style. It is not only used goods, but also works of art, and has been widely used. In some public facilities, such as large stadiums, stadiums and concert halls, when steel grating or step board is required, the construction party should choose to insert steel grating. At the same time, it can also be widely used for ditch cover plate, stair step plate and pool cover plate.According to different insertion methods and angles, it can be divided into pressed steel grating, heavy-load steel grating, integral steel grating, sunshade steel grating, etc. The plug-in steel grating is marked as L in the steel grating model mark 1.Press-type plug-in steel grating: after the loaded flat steel is grooved, the cross bar flat steel is pressed and locked into shape. Generally speaking, the maximum processing height for producing ordinary section steel grating is 100mm. The length of steel grating is usually less than 2000mm. 2.Heavy-duty plug-in steel grating is a kind of steel grating product that the high flat steel and the cross bar flat steel bite each other and are pressed under the pressure of 1200 tons. It is suitable for high-span load bearing occasions. 3.The bearing flat steel and cross bar flat steel of the integral plug-in steel grating have the same height and the groove depth is 1/2 of the bearing flat steel. The height of steel grating shall not be greater than 100mm. The length of steel grating is usually less than 2000mm. 4. Sunshade type plug-in steel grating: the bearing flat steel of the sunshade type plug-in steel grating is slotted at 30 ° or 45 °, and the slot bar flat steel is slotted and pressed into shape. We can hand over grating plates with other spacing and specifications according to different needs, and can use ordinary carbon steel, stainless steel, aluminum and other materials. The height of grating plate is less than 100mm.