PROCEDURE USING GMAW-STT APPLIED AT MAIN PIPELINES WELDING.

The Lincoln Electric Company is the first and only welding company to hold a patent on revolutionary new welding process called Surface Tension Transfer. High productivity welding processes are continuously improved to ensure quality connections that bring required safety factor at our new standards. Welding process MIG / MAG is by far the most productive, is constantly improved.This ensures good penetration and low heat input control. It is ideal for welding joints with open root, on gaps or on thin material with no burnthrough. The paper makes a comparison between the weld root by manual arc welding process and welding GAMW - S TT root layer where steel L 245 NB - Grade B, X 42 and X 52 in that run pipelines. [ABSTRACT FROM AUTHOR]