In stainless steel wire mesh production, the "visible appearance" is only the first step. Long-term stable service depends on rigorous pre-shipment inspections, including aperture testing, tensile testing, and zinc plating thickness measurement. A systematic inspection process ensures filtration accuracy, structural strength, and corrosion resistance, reducing on-site failures and warranty risks.

        Ⅰ. Pore size detection - ensuring filtration accuracy

        Mesh opening directly determines the sieving effect of the stainless steel woven wire mesh. Common inspection methods include:

        • Optical microscopy/image measurement: The mesh is laid flat under a ruler or calibration table, and the mesh opening is measured in multiple fields using imaging software, then averaged. This is suitable for fine meshes.

        • Standard mesh chart/sample: Used for rapid comparison and mesh count confirmation, facilitating quick sampling in the workshop.

        • Averaging method and deviation assessment:Samples are taken from each batch (e.g., 1 roll out of 10 rolls), and measurements are taken at no fewer than 20 locations at different points. The average mesh opening and standard deviation are calculated to determine if it falls within the contract tolerance range.

        Ⅱ. Tensile testing - ensuring mechanical strength

        Tensile properties determine the reliability of wire mesh under tension, impact, or installation. Inspection points:

        • Universal testing machine: Prepare specimens according to national or industry standards, conduct tensile tests, and record yield strength, tensile strength, and elongation after fracture.

        • Joint and weld inspection: Perform local tensile testing on welded or braided joints to ensure that the strength of weak points meets the safety factor.

        • Fatigue and durability assessment: Under complex working conditions, perform reciprocating tensile or impact tests to simulate long-term use.

        Ⅲ. Zinc plating layer - a measure of corrosion resistance lifespan

        The thickness of the galvanized layer determines its protective capability and service life. Common testing methods include:

        • Magnetic thickness gauge (for steel substrates): Fast and non-destructive, suitable for in-line sampling inspection on production lines.

        • XRF (Portable X-ray Fluorescence): Non-destructive measurement, high accuracy, suitable for customer verification and laboratory testing.

        • Gravity/Chemical stripping method: Precisely determines the coating weight in the laboratory or measures the thickness after chemical stripping, used for instrument calibration or disputed testing.

        Through scientific aperture measurement, rigorous tensile testing, and reliable galvanizing thickness measurement methods, Sunny Metal ensures that every roll of wire mesh meets the requirements for filtration accuracy, structural strength, and corrosion resistance lifespan upon leaving the factory. For detailed testing specifications, sample testing, or technical support, please contact us for professional reports and customized inspection services.