🔍 Key Concepts

• Look closely at how the pipe and flange neck are beveled and how the weld metal fills the groove. • Notice whether there is an internal ring between the two pieces, and think about what that indicates. • Review the difference between a fillet weld and a groove weld (V‑, U‑, plug/slot).

💭 Think About

• Does the weld in the illustration simply join two surfaces that are at roughly 90° (a fillet), or does it fill a machined groove between two beveled edges? • Is there a visible backing ring or sleeve inside the pipe–flange connection, and which answer choice specifically mentions a weld made over such a ring? • Which joint type would you normally use to get full penetration and smooth flow in a high‑pressure pipe–to–welded‑neck‑flange connection?

✅ Before You Answer

• Identify whether the cross‑section shows beveled edges forming a V or U shape, not just square edges with a fillet. • Confirm if there is an internal backing ring drawn between the pipe and flange neck. • Eliminate any weld types (like plug/slot welds) that don’t match the geometry you clearly see in the illustration.