Steel plate thickness of cable trays

Steel cable trays typically require 1.2–1.6 mm for light-duty, 2.0 mm for medium-duty, and 2.5 mm or more for heavy-duty applications, with adjustments for span and environmental conditions.Thickness Guidelines by ApplicationLight-duty trays: Suitable for LAN, control, or signal cables in commercial spaces. Recommended thickness is 1.2–1.6 mm, especially for short spans with frequent supports .Medium-duty trays: For moderate cable loads or longer spans, a thickness of 2.0 mm is commonly used. Stainless steel trays of this thickness are preferred in chemical or marine environments for added strength and corrosion resistance .Heavy-duty trays: For power distribution systems, long spans (2.5–3 meters), or industrial applications, 2.5 mm or thicker steel plates are recommended to prevent sagging and ensure structural integrity .Environmental ConsiderationsCorrosive or outdoor environments: Use thicker trays with protective coatings such as galvanized or powder-coated steel. Stainless steel trays of 2.0 mm or higher are ideal for chemical, marine, or coastal installations .Temperature and load compliance: Ensure trays meet IEC 61537 or relevant national standards, which define mechanical strength, corrosion resistance, and load-bearing requirements .Span and Support FactorsTray thickness should increase with span length. Longer unsupported spans require thicker steel to prevent deflection.Frequent support points allow for thinner trays, while wider trays carrying heavier cables may require additional thickness for rigidity .Summary Recommendation1.2–1.6 mm: Light-duty, short spans, indoor use.2.0 mm: Medium-duty, moderate spans, or corrosive environments.2.5 mm+: Heavy-duty, long spans, industrial or outdoor applications. Always verify compliance with IEC 61537, NEMA, or local standards to ensure safety, durability, and regulatory approval . Proper selection of steel thickness, combined with correct support spacing, ensures long-term performance and prevents sagging or structural failure.