New Zealand Cable Tray Materials

Cable trays in New Zealand are commonly made from pre-galvanised steel, hot-dip galvanised steel, and stainless steel, with wire mesh and ladder-style options available for various applications.Common Materials1. Steel (Pre-Galvanised and Hot-Dip Galvanised) Steel is widely used for light to medium duty cable trays. Pre-galvanised steel offers a cost-effective solution for indoor installations, while hot-dip galvanised steel provides enhanced corrosion resistance for outdoor or harsh environments. These trays are suitable for offices, educational facilities, healthcare, and social infrastructure projects across New Zealand . 2. Stainless Steel Stainless steel cable trays, particularly T304 or AISI 316 TI grades, are used where high corrosion resistance is required, such as in food processing, chemical, or coastal environments. Wire mesh stainless steel trays allow air circulation to keep cables cool and are resistant to corrosion in natural and food atmospheres . 3. Wire Mesh Cable Trays Wire mesh trays are fabricated from stainless steel rods and are available in various widths (60mm to 600mm) and side wall heights. They are ideal for applications requiring flexibility, easy access, and ventilation for cables. Accessories such as bends, risers, dividers, and mounting brackets are available to support complex layouts . 4. Ladder and Solid Bottom Trays Steel & Tube and other suppliers provide ladder-style trays for heavy-duty applications and solid-bottom trays for environments where dust or debris protection is needed. These trays can be supplied with BIM-enabled CAD files for design integration .Finishes and CoatingsPowder Coating or Painted Finishes: Available for aesthetic or additional corrosion protection.Hot-Dip Galvanised: Recommended for outdoor or high-moisture environments.Pre-Galvanised: Suitable for indoor use with moderate environmental exposure .Considerations for SelectionEnvironment: Choose stainless steel for corrosive or food-related environments.Load and Span: Steel trays are suitable for medium to heavy cable loads; wire mesh trays are better for lighter loads and flexible routing.Installation: Modular systems allow easy installation without specialised tools, and accessories support complex layouts . In New Zealand, suppliers such as Steel & Tube, S.E.P, and Mechanical Support Systems provide a wide range of cable tray materials and accessories to meet both commercial and industrial requirements .