1. Heat affected Zone (HAZ) : Because laser cutting is cut on the basis of heat, the laser beam will produce high temperature in the cutting area, causing the heat affected zone, that is, the part close to the cutting line. HAZ may cause the material to deform, harden or degrade.

2. Burrs: During the cutting process, there may be some burrs or non-smooth edges. This may affect the quality of the cut, the aesthetics, and the assembly of the workpiece.

3. Oblique cutting: Oblique cutting refers to the situation where the cutting line is not at right angles to the vertical line on the surface of the material. This may be due to the Angle of the laser beam not being properly adjusted when parallel to the surface of the material. Miter cuts may affect fitting and precise alignment of materials.

4. Weld residue: there may be welded joints or welds in the steel structure, and welding slag and weld residue may be left near the weld during laser cutting. These residues may require additional handling steps.

5. Coating effect: If there is a coating on the surface of the steel structure (such as sprayed paint), the laser may react with the coating or burn the coating during the cutting process, affecting the cutting quality and the protective effect of the coating.