1. According to welding method, it can be divided into: pressure welded type, inlaid type, through-lock type, and through-welded type.
2. According to the shape of the side surface of its load-bearing flat steel, it can be divided into: flat type, serrated type, and "I" type, etc.
3. According to its use, it can be divided into: general-purpose steel grating and special-purpose steel grating, such as: trench covers, stair treads, etc.
4. According to material, steel grating is divided into: stainless steel grating and carbon steel grating.
