Thickness of African Metal Cable Trays

Metal cable trays in Africa typically use mild steel, stainless steel, or pre-galvanized steel with thicknesses ranging from 1.5 mm to 3 mm depending on the tray type and application.Material and Tray TypesCQ Mild Steel and Stainless Steel: Commonly used for ladder-type trays such as F76 and SB75, suitable for horizontal and vertical mounting in industrial, mining, and commercial applications. Stainless steel options include 3CR12, SS304, and SS316, providing corrosion resistance for harsh environments .Pre-Galvanized Steel: Used in light to medium-duty trays like LT12 and LT19, with zinc coating thickness varying according to the galvanization process (electro-galvanization or hot-dip galvanization) to enhance durability .Typical Thickness RangesLadder Trays (F76, SB75): Mild steel and stainless steel trays are generally manufactured with sheet thicknesses around 1.5 mm to 3 mm, depending on load requirements and span length .Light/Medium-Duty Trays (LT12, LT19): These trays use flat sheets bent to form rigid channels, typically starting at 3 mm thickness for the base sheet, with side flanges of 12 mm height for structural support .Galvanized Coating: For pre-galvanized trays, the zinc layer thickness is a linear function of the galvanization process, with hot-dip galvanization providing a thicker, more durable coating than electro-galvanization .Standards and ComplianceAfrican metal cable trays are generally manufactured in accordance with NEMA VE-1 or equivalent IEC standards, ensuring safe load-bearing capacity, deflection limits, and structural integrity . The thickness of the metal is selected to meet these standards while accommodating the intended span and cable load.SummaryIn practice, industrial and commercial cable trays in Africa use metal thicknesses from 1.5 mm for light-duty stainless steel trays to 3 mm for medium-duty pre-galvanized or mild steel trays, with additional zinc coating for corrosion protection. The exact thickness depends on the tray type, span, load, and environmental conditions, and all installations should comply with NEMA or IEC standards for safety and performance .