The transverse bar of the presslocked steel grating is usually pressed into the bearing flat steel by a certain size of low carbon steel, stainless steel and brass plate through 200 tons of strong pressure. The extrusion force produced by the deformation of the flat steel at the power-saving place is automatically locked. The transverse bar of the presslocked steel grating is usually flat steel. It can provide better lateral bearing capacity and prevent the inclined buckling of bearing flat steel. Presslocked steel grating is especially suitable for heavy load steel grille. Presslocked steel grille plate has the characteristics of high strength, corrosion resistance, maintenance-free and so on. It also has the characteristics of uniform and precise combination, simple and exquisite structure, natural harmony, elegant style and so on.