SS304 400 Micron Stainless Steel Mesh
When precision and durability matter in industrial filtration, SS304 400 micron stainless steel wire mesh delivers consistent, dependable performance. Constructed from AISI 304 (1.4301) stainless steel wire through a precision plain weave process, this mesh features a nominal aperture of approximately 400 microns — roughly equivalent to 40 mesh — offering an effective balance between particle retention and flow rate. The 304-grade alloy, containing 18% chromium and 8% nickel, provides solid resistance to oxidation and corrosion in atmospheric environments, fresh water, and a range of mild chemical settings. With a continuous service temperature reaching up to 800°C, it maintains structural integrity under conditions that would degrade many alternative materials. Each roll is inspected for uniform aperture distribution and a smooth, burr-free surface, helping reduce contamination risk and simplify cleaning between production cycles.
The consistent quality of this mesh starts with a controlled manufacturing process. Stainless steel wire rod is drawn through progressive dies to reach the target diameter, then annealed to relieve internal stress and improve ductility before weaving. On high-speed automatic looms, warp and weft wires are interlocked in a plain weave pattern — the most widely adopted weave structure for its balanced combination of tensile strength, dimensional stability, and uniform opening size. After weaving, the mesh undergoes pickling and passivation to remove surface impurities and form a protective chromium oxide layer that further enhances corrosion resistance. The finished product is inspected for mesh count accuracy, wire diameter tolerance, and width uniformity before being cut to customer specifications and packaged for shipment.
Across a broad range of industries, 400 micron SS304 mesh serves as a versatile solution for filtration, screening, and separation. In food and beverage processing, it is used for straining juices, filtering beer wort, sifting flour and spices, and fabricating drying trays and conveyor belts where hygiene is critical. In chemical and pharmaceutical sectors, the mesh supports solvent filtration, catalyst recovery, pigment screening, and tablet granulation processes requiring reliable particle-size control. Water treatment facilities employ it in pre-filtration and wastewater screening, while the ceramics industry relies on it for glaze and raw-material sieving. Automotive manufacturers incorporate this mesh into oil filters, fuel strainers, and diesel particulate filters. It can be cut, formed, or fabricated into custom filter discs, basket strainers, and screen panels, making it equally valuable to OEMs and end users needing a tailored component.
| Weaving method |
Plain Weave, Twill Weave, Plain Dutch Weave, Twill Dutch Weave |
| Material |
304, 316, 316L |
| Mesh |
From Mesh 2x2 to Mesh 200x200 |
| Wire Diameter (mm) |
From 1.80 to 0.053 |
| Opening Hole Size (mm) |
From 10.9 to 0.07 |
| Surface Treatment |
Electrolytic polishing, electrostatic powder coating, PVC, wire drawing passivation |
| Color |
Silver, black, gray, green |
| Packaging Method |
Paper tube sleeve + PE stretch film + thickened waterproof kraft paper + PP woven bag |
| Usage |
Used for screening and filtration, fencing and protection, scene decoration, and livestock breeding |
As a specialized manufacturer and wholesale supplier of wire mesh products, we recognize that every application places different demands on the material — and that no metal mesh lasts indefinitely. While SS304 offers dependable corrosion resistance under normal conditions, prolonged exposure to strong acids, high-chloride environments such as seawater, or abrasive particulate streams will gradually affect its service life; surface rust or aperture wear over time is a natural part of any metal product's aging process. We encourage buyers to select the appropriate alloy grade and mesh specification based on their actual operating environment, and our team is available to discuss technical details and recommend suitable configurations. Our focus is straightforward: supplying quality woven wire mesh at competitive wholesale pricing, backed by consistent production standards and reliable delivery.

