Butt weld is considered to be the simplest and most basic weld joint design. When fabricating structures or pipe systems, a butt weld is often employed as the junction of choice. In this kind of weld, the molten metal is applied around the joint, creating a circular weld.
Two metal pieces are welded together at their joined edges to produce the connection. An essential characteristic of a butt joint is that the metal which undergoes welding stays inside the connected surfaces and the workpieces’ surfaces are all parallel. As a result, the workpieces are virtually parallel to one another and do not overlap, unlike lap joints.
Knowledge and experience are essential when it comes to making high-quality welds. The fillet weld and the butt joint weld are the only two fundamental kinds of continuous welds. Many welders will tell you that there are more, but that they are all variations on the fillet or butt weld.