Which of the following types of weld does not require chamfering?

Fillet welds are distinct in that they do not require chamfering the edges of the base metals before welding. These welds are designed to fill the gap between two pieces of metal (often at right angles) and are applied to both the inside and outside corners. The design of a fillet weld allows it to be deposited directly at the joining area without needing to prepare the edges, which makes it a more straightforward and quicker option in many welding scenarios.

In contrast, butt welds, tee welds, and corner welds generally do involve preparation of the edge, such as chamfering, to ensure proper penetration and fusion of the weld during the process. Butt welds typically require the edges to be beveled to allow for complete fusion, while tee and corner welds may also need edges prepared for optimal strength and integrity in the joint. This fundamental characteristic of fillet welds makes them suitable for various applications where simplicity and speed are essential factors.