Materials used are Steel, Hot dipped galvanized steel, Aluminium, Stainless, Epoxy painted steel or FRP fiberglass. Light gauge perforated trays supporting light cables. Sizes range from 50 mm wide to 900 mm wide and 2. There are several types of cable trays, including ladder, perforated, solid bottom, basket, and channel trays. Each cable tray type performs a different function and comes in various materials such as aluminum. Explore various cable tray types and sizes for electrical installations. Automation lines in factories, power stations, transformer stations, large projects such as apartments, hospitals, shopping centers. Applications: Power plants and substations, Heavy.