The 1G position on plate indicates which groove?

The 1G position on plate indicates which groove?

• A. Flat-groove
• B. Horizontal groove
• C. Vertical groove
• D. Overhead groove

Answer: (A)

In welding, how the plate is oriented while you weld is what the position label describes. The 1G designation means the plate is laid flat in a horizontal plane and you weld the butt joint from the top. Because the workpiece sits flat, the groove you prepare for the weld is a flat surface on that plate, so it’s called a flat-groove. This setup is commonly used because gravity doesn’t pull molten metal away from the joint, making control easier. Different orientations would require different groove geometries suited to those angles, but in the flat position the groove is the flat type.

In welding, how the plate is oriented while you weld is what the position label describes. The 1G designation means the plate is laid flat in a horizontal plane and you weld the butt joint from the top. Because the workpiece sits flat, the groove you prepare for the weld is a flat surface on that plate, so it’s called a flat-groove. This setup is commonly used because gravity doesn’t pull molten metal away from the joint, making control easier. Different orientations would require different groove geometries suited to those angles, but in the flat position the groove is the flat type.