Cable tray intermediary (STRAIGHT JOINT) is used to connect two branches of the cable tray. Its width is based on the width of the cable tray and its wall height is considered based on the height of the cable tray wall, and its length is fixed and 250 mm. The thickness of the sheet It is used from 0.6 to 2. The method of connecting to the cable tray is through the bean-shaped holes on the intermediate walls, which are connected to the cable tray by bolts and nuts.