Chamfers and bevels prepare metal for a welded seam by cutting an angle on the edge of the piece. Although there are ways to add bevels and chamfers, including hand grinding and flame cutting, machining is neat, quick, and safe. The chosen method is often determined from the drawing or blueprint
Here's the information needed to get the correct bevel or chamfer:
The degree of angle: The standard slope is a 37.5-degree angle for pipe, but that will change for other applications.
The length of the bevel: This measurement is designated along the hypotenuse of the angle and is sometimes referred to as the "land" or the material remaining on the workpiece. The length must be consistent.
There are several welding bevels and symbols
with which to become familiar.