In a groove weld, the angle formed between the prepared edge and a plane perpendicular to the surface is called which?

• A. Groove Angle
• B. Bevel Angle
• C. Angle of Preparation
• D. Weld Angle

Answer: (B)

In groove weld terminology, how the edge is cut back is described by the bevel angle. This is defined as the angle between the prepared edge and a plane perpendicular to the surface of the plate. Knowing this angle tells you how much material has been removed from the edge and dictates the groove geometry, which in turn affects penetration and the amount of filler metal needed. A smaller bevel angle preserves more thickness and creates a narrower groove, while a larger bevel angle opens up the groove for deeper penetration and easier welding on thicker plates. Other terms describe different aspects of the joint—groove angle refers to the overall groove shape at the joint, and angle of preparation is a less precise synonym seen in some texts—while weld angle deals with the bead orientation, not the edge prep.