The 2G weld is a standard certification test for structural and pipe welders. Companies and labs like Applied Technical Services often use this test to verify a welder's competence before hiring. A typical 2G test involves:
In a 2G plate weld, the base plates are positioned vertically, but the weld path (the axis of the weld) runs horizontally. For pipe welding, a 2G position means the pipe is standing vertically on its end, and the welder moves around it to create a horizontal seam. The Challenge: Fighting Gravity 2g weld
: If the heat is too high or the travel speed too slow, the top edge of the joint can melt away without being filled, leaving a "shelf" or notch known as an undercut. The 2G weld is a standard certification test