What type of weld is used to connect two pieces of metal together end to end?

A butt weld is specifically designed to connect two pieces of metal end to end. This type of weld involves aligning the edges of the materials to be joined, allowing for a clean and strong union. Butt welds are widely used in various applications, such as piping and structural assemblies, because they create a strong joint that can withstand significant stress when properly executed.

In contrast, a fillet weld is used to join two pieces of metal at an angle, typically at a right angle, rather than end to end. A lap weld involves overlapping two pieces of metal and welding them together, which does not provide the same end-to-end connection. A tack weld is a temporary weld meant to hold pieces in place for further welding and is not used for final connections. Overall, the butt weld is the preferred choice for creating strong, permanent connections between metal components aligned end to end.