Because 2G translates directly to field competency. In structural steel erection, beams are often positioned where you must weld horizontally while standing on a ladder or a scaffold. You cannot rotate the workpiece to make it easy (1G). You must have the skill to put the metal where the engineer specified, regardless of gravity’s pull.
Understanding Welding Positions: A Comprehensive Guide - Lincoln Tech welding 2g position
| Criteria | Requirement | |----------|--------------| | Reinforcement | 0" – 1/8" (0–3.2 mm) | | Undercut | Max depth 1/32" (0.8 mm), not exceeding 1" length in 12" | | Porosity | None visible (for radiographic/visual inspection) | | Cracks | Not allowed | | Incomplete fusion | Not allowed | | Penetration (root) | Full fusion without excessive drop-through | Because 2G translates directly to field competency
When you are welding 2G, look at the top toe of the weld. Is it digging in (undercut)? If so, your arc is too long, or you are holding the angle too high. Look at the bottom toe. Is it rolling over without fusing? You are moving too slow or your amperage is too low. You must have the skill to put the