Specifications and dimensions of square steel for cable tray hangers

Square steel for cable tray hangers typically ranges from 2mm to 3mm thickness, with widths and heights matched to tray sizes from 50mm to 300mm, and is commonly pre-galvanized or hot-dipped for corrosion resistance.Material and FinishCable tray hangers are generally made from high-quality steel, including pre-galvanized (PG) or hot-dipped galvanized (HDG) steel, and in some cases stainless steel (A316/A4) for enhanced corrosion resistance in demanding environments . The steel is selected to provide rigidity, strength, and long-term durability for supporting cable trays, trunking, or baskets.Thickness and Cross-SectionStandard thickness: 2mm for most stand-off and G hanger brackets .Cross-sectional properties: Manufacturers provide data on section modulus (Sx) and moment of inertia (Ix) to ensure structural adequacy for the intended load .Square steel dimensions: Typically designed to match the width of the cable tray, with common hanger widths ranging from 50mm to 300mm and drop lengths (for trapeze supports) up to 500mm .Compatibility with Cable TraysStand-off brackets: Used to mount trays at a specific clearance from walls or surfaces, available in 50mm–300mm sizes .G hanger supports: Designed for overhead support, commonly for 100mm and 150mm tray widths, with 3 x M10 top support holes for secure attachment .Trapeze supports: Pre-assembled for quick installation, supporting various tray widths and drop lengths, including 100mm and 150mm widths with 500mm drops .Design ConsiderationsEnsure the square steel dimensions match the tray width and load requirements. Ladder trays, perforated trays, and wire mesh trays may require different hanger sizes due to load and ventilation needs .Verify NEC, NEMA, and UL compliance for safety and code adherence .Consider corrosion protection based on installation environment: indoor, outdoor, or industrial settings .Summary Table of Typical Square Steel Hanger DimensionsHanger TypeTray Width CompatibilitySteel ThicknessDrop/Stand-offFinishStand-Off Bracket50–300mm2mm50–300mmPG/HDGG Hanger Support100–150mm2mmN/APG/HDGTrapeze Support100–150mm2mm500mmPG/HDG/StainlessThese specifications ensure secure, code-compliant installation of cable trays while providing structural integrity and long-term durability in various industrial and commercial applications .