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Grating is a multifunctional structure that plays an important role in modern architecture and engineering. According to different materials, designs, and application fields, grilles can be classified into multiple types. Understanding the classification and application of grilles not only helps us better utilize this structure, but also enhances the overall efficiency and aesthetics of engineering projects. Classification of Grating From the perspective of materials, grilles can be divided into several categories such as metal catwalk grating , plastic grating, and concrete grating. Metal grilles are usually aluminium grating , stainless grating , or carbon steel, which have high strength and corrosion resistance, and are widely used in industrial plants, bridges, and public facilities. Plastic grilles are widely used in outdoor environments such as gardens, balconies, etc. due to their lightweight, corrosion-resistant, and easy to process characteristics. Concrete grating emphasizes its structural stability and wear resistance, and is commonly used in heavy-duty areas such as traffic roads and parking lots. From a functional perspective, grilles can be divided into load-bearing grilles and decorative grilles. Load bearing grilles are designed to withstand large loads and are typically used in staircases, platforms, and industrial facilities to ensure structural safety and stability. Decorative grilles pay more attention to the combination of aesthetics and functionality, commonly found in curtain wall, ceiling, and exterior design, which can effectively add visual layers and improve the ventilation and lighting effects of buildings. The application of Grating In terms of application fields, the use of grilles is widespread across multiple industries. The construction industry is one of the most common application areas for grilles, which are not only used for structural support but also widely used in indoor and outdoor aesthetic design. In addition, grilles also play an important role in municipal engineering, such as drain grills used in drainage systems, which can effectively prevent debris from blocking and maintain the cleanliness of the urban environment. In terms of ecological and environmental protection, the application of grilles is equally important. For example, in sewage treatment plants, grilles are used for initial filtration of solid impurities to ensure the normal operation of subsequent treatment processes. Using ecological grids for rainwater collection and discharge not only effectively controls soil erosion, but also improves water quality and ecological environment. Overall, there are various types of grilles, and their functions and applications vary depending on the occasion. Through rational design and scientific material selection, grilles not only enhance the practicality and aesthetics of buildings, but also contribute to the sustainable development of various industries. In future engineering design, in-depth exploration of the classification and application of grilles will be more conducive to achieving effective utilization of resources and harmonious development of the environment.