: The edges are machined into curved "U" or "J" shapes. These are used for extremely thick materials to consume less filler metal than a standard V-groove. 💡 Advantages and Disadvantages Advantages

: The edges are left flat and parallel to each other. It is best used for thin sheets of metal.

: Fabricating frames, exhausts, and body panels without adding the heavy, bulky overlap of lap joints. Bevel Types for Butt Welding - AVEVA™ Documentation