Which statement is true about the usage of the 1G pipe welding certification?

• A. It is rarely used.
• B. It is the most common pipe certification position.
• C. It is used only for vertical welding.
• D. It is used for groove welds.

Answer: (A)

1G is a pipe-welding certification that tests a groove weld around a pipe in a fixed horizontal (flat) orientation. In industry, the most common pipe certification positions are other orientations (like 2G, 5G, or 6G), which cover a wider range of real-world welding scenarios. Because of this, the 1G certification is not frequently requested, making it rarely used. The other statements don’t fit as well: it isn’t the most common position, it isn’t limited to vertical welding, and while 1G does involve groove welds as part of the test setup, the key point is how rarely it’s used rather than the weld type alone.