1.Automatic fillet welding both of dual side of U-Rib. 

2.Selective Single/Dual side welding and Carriage arm height is adjustable to cope with the various U-Rib height. 

3.Because tension function is equipped at the torch clamp, welding tracing is constant and provides a positive i nfluence on welding quality. 

4.While the carriage runs on the U-Rib, with mechanical guide rollers of the torches follow the bottom plate that keeps constant arc height during welding. 

5.Minimized gear backlash offers various constant speed/adjustable controls precisely thus the highest quality welding and a long life by means of a Special Motor with a Reducer.