What is the included angle between the groove faces of a groove weld called?

• A. Bevel angle
• B. Groove angle
• C. Root angle
• D. Toe angle

Answer: (B)

The groove angle is the included angle between the faces of the groove. This angle is defined at the root where the two groove faces meet and determines how wide the groove is and how much filler metal the weld will need to fill properly. A proper groove angle ensures good access for the welding process and adequate penetration. Bevel angle describes how the edge of the plate is cut to form the groove, not the angle between the groove faces. Toe angle refers to the angle at the weld toe where the weld metal meets the base metal along the surface, and root angle is a different groove geometry parameter.