Industrial filtration Screen Guide: Material, Mesh Size & Filtration Accuracy

        In industrial production and applications such as solid-liquid separation, precision screening, and gas filtration, stainless woven filter meshes are one of the core components.Whether in the chemical, pharmaceutical, food, metallurgical, oil and gas, or environmental water treatment industries, the material, mesh size, and filtration accuracy of the filter directly affect production efficiency, product quality, and system operating costs. For engineers, purchasing personnel, or technical decision-makers, understanding the characteristics of different filter and their suitable applications is fundamental to achieving efficient and stable operation.

        Ⅰ. Principles for selecting screen mesh materials

        Industrial filter meshes are available in a wide variety of materials, each exhibiting different performance characteristics in terms of strength, corrosion resistance, wear resistance, and high-temperature resistance.Therefore, choosing the appropriate material based on the application environment is crucial.

        1. Stainless Steel filter Mesh

        Stainless steel woven filter mesh is one of the most commonly used materials for industrial filtration. Typical varieties include 304, 316, and 316L. Its advantages lie in its excellent corrosion resistance,high-temperature resistance,and mechanical strength.

        2. Carbon Steel and Galvanized Wire Mesh

        Carbon steel wire mesh has good mechanical properties and is relatively inexpensive.Surface galvanizing (hot-dip galvanizing or electroplating) can also significantly improve its corrosion resistance.

        3. High-Temperature Resistant Alloy Mesh

        For screening high-temperature gases or molten materials, such as in refractory material manufacturing and the foundry industry, its extremely high heat resistance and oxidation resistance make it the preferred choice.

        Ⅱ. The scientific selection of mesh size and filtration accuracy.

        One of the key indicators of a stainless wovven filter screen is the mesh size and filtration accuracy, which determines the retention efficiency of the target particle size.They can be broadly classified into coarse filter, medium filter, and fine filter:

        1. Coarse Screens

        These are typically used to remove large particulate impurities; they have larger mesh sizes and high throughput; and are used in applications such as ore, sand and gravel, and primary solid separation. They improve downstream processing efficiency and reduce the load on subsequent equipment.

        2. Medium Mesh Screen

        Features medium-sized mesh openings; used for classifying materials of medium particle size; commonly found in the screening of chemical powders, building materials, and pharmaceutical raw materials.

        3. Fine Mesh Screen

        Smaller mesh size; used for high-precision screening and particle separation; commonly used in chemical, food-grade powder, ultra-fine particle filtration, and gas purification applications.

        Ⅳ. Installation, maintenance, and on-site adaptability

        The performance of high-quality stainless steel screen mesh depends not only on the material and structure but also on the installation and maintenance system. Proper installation reduces localized stress concentrations and extends service life; regular maintenance prevents clogging, reduces wear, and prevents screen hole deformation, thus improving the overall stability of the screening system.

        Conclusion

        Industrial filter woven screens, as core components in solid-liquid separation, product classification, and filtration and purification systems, have their material, mesh size, structure, and suitability to the application site determining the screening effect and system stability.

        Leveraging its extensive technical expertise and comprehensive range of filter screen products,Kewei Company can provide professional screen selection advice and customized solutions based on the customer's industry, operating parameters, and screening objectives.