The key technology of steel grating welding process: at each intersection of load flat steel and crossbar, it should be fixed by welding, riveting or pressure locking. It is best to use pressure resistance welding or arc welding for the welding of steel grating. The press lock of steel grating can be fixed by pressing the cross bar into the load flat steel with a press. Steel grating should be processed into shapes of various proportions according to the needs of users. The distance between the loaded flat steel and the crossbar can be determined by the supplier and the buyer according to the plan. As an industrial channel, it is advocated that the distance between the loaded flat steel and the crossbar should be no more than 40mm and 165mm respectively. At the end of loading flat steel, flat steel with the same standard as loading flat steel shall be used for wrapping. In special applications, steel or edge plate can be used for wrapping, but the cross-sectional area of edge plate should not be less than that of load flat steel.