Read more Cable Tray & cable ladder A cable tray system is used to support insulated electric cables used for power distribution and communication. Cable trays are also used as an alternative to open wiring or electrical conduit and are commonly used for cable management in commercial and industrial construction. All Cable trays are made from pre galvanized ST37 Tensile strength steel. We offer two types of galvanized cable trays and cable ladders, the first one where hot dipped pre galvanized is punched and then galvanized. The other type is punching an already galvanized sheet. Preference is given to the first method. Design 2 heavy duty return flange comply with international standard. Coupler set are made of 2 pieces including 8 bolts and 8 nuts. Other special accessories are done upon request.