Rungs are welded to the side members by either cold metal transfer (CMT/GMAW) or gas tungsten arc welding (TIG/GTAW). Both processes have their inherent advantages and are applied to the appropriate product. maintain spacing or to keep cables in place when the tray is ect the minimum bend ra-dius for cables as they exit the bottom of the cable tray. Adherence to these guidelines is essential: 1. Cable Tray Installation Cable trays should be installed in accordance with the latest revision of the NEC, NEMA VE. Cable tray welding is essential for ensuring the structural stability of cable tray systems in industrial and commercial wiring setups. Cable tray welding enhances the durability of. The method for producing bridge bend elbows is as follows: Take a 90-degree cable tray bend elbow as an example, and apply the same principles for 45-degree bends accordingly. The length of the bottom side (bottom diagonal) after bending the cable tray should be equal to the width of the cable. According to an embodiment of the present invention, a method to weld a cable tray support, which is capable of improving convenience of welding by forming a bonding surface on the lower part, comprises: a welding position selecting step of selecting a welding position of a cable tray support; a.