China 42mm Copper Foil Wire Braided Mesh Tube Manufacturer, Supplier, Factory

When sourcing reliable electromagnetic interference (EMI) shielding solutions, the 41mm Copper Foil Wire Braided Mesh Tube delivers proven performance for medium-scale cable harnesses, while the slightly larger 43mm Copper Foil Wire Braided Mesh Tube offers a near-custom fit for metric conduit transitions. Our 42mm variant bridges these dimensions with precision, and for applications requiring incremental sizing, the 44mm Copper Foil Wire Braided Mesh Tube and 45mm Copper Foil Wire Braided Mesh Tube extend the range for bulkier assemblies. Each tube is engineered with high-purity copper foil strands tightly braided over a flexible wire core, achieving surface transfer impedance below 50 mΩ/m and attenuation exceeding 60 dB from 30 MHz to 1 GHz. The 42mm inner diameter accommodates cable bundles up to approximately 38-40 mm after compression, with the knit pattern providing 360-degree coverage and excellent mechanical recovery. Designed for industrial automation, data transmission, and defense electronics, the tube withstands continuous flexing without strand breakage due to the wire reinforcement, ensuring long-term shielding integrity in dynamic installations.

The 42mm Copper Foil Wire Braided Mesh Tube combines lightweight flexibility with high-conductivity shielding, making it a preferred choice where consistent ground path and physical protection are required. The construction starts with oxygen-free copper foil, slit into precise widths and formed around a tinned copper drain wire, then braided at a density exceeding 85% coverage. This dual-material architecture yields a tensile strength of 120 N and a temperature range of -40°C to +150°C. The tube expands radially to ease installation over connectors and contracts snugly around the bundle, eliminating the need for additional securing sleeves in static applications. Its flat profile minimizes snagging in tight conduits, and the naturally corrosion-resistant copper requires no post-coating, though it can accept tin plating for harsh environments. Typical roll lengths of 50 or 100 meters facilitate high-volume production with minimal waste.

• Inner diameter: 42 mm (nominal), expandable up to 55 mm during fitting
• Braiding angle: 45° ± 5° for optimal extensibility and shielding balance
• Foil thickness: 0.05 mm per strand, multi-strand parallel lay-up
• Drain wire: 0.5 mm² tinned copper, integrated along the full length
• Surface transfer impedance: < 30 mΩ/m at 10 MHz (tested per IEC 62153-4-3)
• Operating temperature: -40°F to 302°F (-40°C to +150°C) continuous
• Coverage: 85% minimum optical, with no voids exceeding 2 mm
• Weight: 105 g/m approximately, allowing for significant weight savings versus solid copper tube

The braid integrates easily with standard connector backshells and grounding clamps using standard crimping or clamping techniques. For high-flex environments, we recommend a 25% compression pre-load to avoid abrasion of the foil edges. The wire mesh resists unraveling when cut, thanks to a hot-knife sealed edge processing, a detail often overlooked in budget alternatives. Custom configurations, including partial inner coatings of silicone or full coverage tin plating, are available on request for applications involving salt spray or extreme humidity. The 42mm diameter fits common multi-pair instrumentation cables, hybrid power-data lines, and VFD motor cables, where electromagnetic compatibility (EMC) compliance is mandatory. By combining low DC resistance (less than 0.01 Ω/m) with a flexible form factor, the tube maintains a consistent shield-to-ground connection even when routing through complex cable trays adjacent to sources of radiated noise, effectively suppressing both conducted and radiated emissions.