1. According to the welding method, it can be divided into pressure welded steel grating, phase embedded steel grating, locked steel grating and welded steel grating.
2. According to the side shape of the loaded flat iron, it can be divided into flat steel grating, zigzag steel grating, "I" shaped steel grating, cross bar steel grating and composite steel grating.
3. According to the application, it can be divided into ordinary steel grating and special steel grating. Examples: trench cover, trench cover, tree trench cover, ladder treads, platform steel grating, step plate, access floor, walk to steel grating.
4. According to its material, it is classified into stainless steel grating, carbon steel grating, brass plate steel grating and glass fiber reinforced plastic steel grating.
5. According to the surface treatment, it can be divided into hot dip galvanized steel grating, cold dip galvanized steel grating and painted steel grating.
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