Structural design of a modular steel cable tray support system using HSS members, including overall framing layout, member sizing, connection detailing, and segmentation into repeatable assemblies suitable for off-site fabrication. The initial concept relied on a conventional Unistrut-based system installed incrementally on site, which involved extensive field labor, installation time, and. Atkore Trof is a prefabricated mill-galvanized steel structure consisting of ventilated or solid bottoms, welded to the side rails, and is manufactured and tested to NEMA Standard VE-1 Zero Tangent Fittings Tangent eliminate the wasted space in tightly packed areas, allowing more tray runs to. certification requirements and applications. Whether specifying a major new project, refurbishing existing facilities or doing the engineering, procurement and construction (EPC) for your end user, with T&B Cabletray, ABB offers reliable so utions du g conforming to ASTM A123 & ISO 1461 : m. Industrial cable management, enhanced by our UK-manufactured cable trays, delivers optimised safety, maximised efficiency, and increased productivity within your industrial operations. voestalpine Metsec offer complete cable tray systems from 12mm to 50mm deep and 50mm to 900mm wide and 12mm,18mm. Cable Trays are designed to meet most requirements of cable and electrical wire installations and comply to local and international standards of fabrications and finishes. We perform most of the work for you, so you don't have to. We utilize a variety of materials, including Unistrut Metal Framing.