| Position | Code | Orientation | Difficulty | | :--- | :--- | :--- | :--- | | | 1F | Horizontal plates | Easy | | Horizontal | 2F | Vertical plate + horizontal top | Moderate | | Vertical | 3F | Vertical T-joint | Hard | | Overhead | 4F | Overhead corner | Expert |
This involves welding on a vertical surface where the weld bead moves up or down. welding positions