The picture below shows a welder joining a 3/4 inch boss to a 4 inches pipe in a 2G position using GTAW Process. This is said to be in 2G position since the axis of the weld is in horizontal direction and the axis of the boss is in vertical direction. In case of a pipe to pipe connection, in order to have a 2G position, both pipe axis should be in vertical direction and the axis of the weld is in horizontal direction.

2G Welding Position using GTAW Process

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