The 1G position on pipe indicates which groove?

The 1G position on pipe indicates which groove?

• A. Rotated flat groove
• B. Flat groove
• C. Horizontal groove
• D. Vertical groove

Answer: (A)

In pipe welding, the position designations describe how the pipe is oriented during the weld. The 1G position means the pipe is in a flat, horizontal orientation and you’re welding around the circumference. On a round pipe, the ends to be joined are prepared with a bevel, and as you work around the seam the bevel plane appears rotated relative to a straight, flat plate joint. That combination is captured by the term rotated flat groove: a flat bevel that has to be rotated around the pipe axis to fit the circular joint. This makes it the best description for the groove in that position.

In pipe welding, the position designations describe how the pipe is oriented during the weld. The 1G position means the pipe is in a flat, horizontal orientation and you’re welding around the circumference. On a round pipe, the ends to be joined are prepared with a bevel, and as you work around the seam the bevel plane appears rotated relative to a straight, flat plate joint. That combination is captured by the term rotated flat groove: a flat bevel that has to be rotated around the pipe axis to fit the circular joint. This makes it the best description for the groove in that position.