Which statement best describes the 4G welding position?

• A. 4G is vertical.
• B. 4G is horizontal.
• C. 4G is overhead.
• D. 4G is flat.

Answer: (C)

Welding positions describe how the workpiece is oriented while you weld. The 4G position is the overhead position, meaning you’re welding from above the joint and the weld bead faces downward. This orientation is why gravity affects the molten metal and slag more than in other positions, making it one of the more challenging plate-welding positions. In standard plate welding, 1G is flat, 2G is horizontal, 3G is vertical, and 4G is overhead—the designation that confirms you’re working above the joint.