Galvanized crossarms for cable trays are typically made of Q235 low-carbon steel via rolling. 5mm, 3mm, and 4mm) based on load levels. All illustrations, descriptions and technical information included in this document are provided as indications and can cable trays are equivalent. 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. For suspending double, three phase covered conductor lines. 6 kN horizontally along conductor, Fy= 3. 5. This Specification details the requirements for manufacture, supply, testing and delivery of Composite Fibre cross-arms for use on overhead electricity distribution systems in an exposed environment. association representing the major electrical equipment manufac-turers in the U.