What type of weld is made by joining two pieces at a right angle?

A fillet weld is specifically designed for joining two pieces of metal that are positioned at a right angle to each other. This type of weld is triangular in cross-section and fills the gap between the joined pieces, thereby effectively bridging the connection and providing strength at the joint. Fillet welds are commonly used in various applications, including structural components and frames, due to their versatility and ease of application.

In contrast, bevel welds involve preparing the edges of the pieces to create an angle for welding, typically used in butt joints where the edges of the materials are aligned. Butt welds join two pieces edge-to-edge, usually requiring complete penetration through the material thickness, which is not applicable when the pieces are oriented at right angles. Lap welds occur when one metal piece overlaps another, forming a joint that can require a different welding approach altogether. Therefore, the fillet weld is the most appropriate choice for joining two pieces at a right angle.