Fixed platform or sliding platform on rails, motor-driven with stepless speed variation, guided by ball bearings. 
Rotating track of large diameter for turning the column by 360° provided with stop devices.
Column for vertical travel of welding equipment support arm. 
Arm lifting unit with dual-speed (slow-quick).
Horizontal speeding arm, with adjustable speed by means of D.C. motor with electronic control or with fixed speed.
Welding equipment mounted at one side of the arm. 
Current generator mounted on machine.
Double pushbutton controls: on hood panel and on push-button panel close to the welding equipment.