Which code represents a groove weld in pipe certification positions?

• A. F
• B. R
• C. G
• D. 2

Answer: (C)

In pipe certification positions, a single-letter code is used to identify the weld geometry—the type of weld you’re performing. The letter that stands for Groove weld designates joints where the edges are beveled or shaped to form a groove, which the filler metal fills to create the joint. This distinguishes it from a fillet weld, where there isn’t a groove and the weld fills a triangular area at the intersection of two parts.

That is why the code associated with Groove weld is the one that uses G—G signals “groove.” The other codes correspond to different concepts (for example, a fillet designation or a non-weld-type marker), and the numeric option isn’t a weld-type designation.