Which tool is commonly used for welding steel joints?

An arc welder is the tool specifically designed for welding steel joints. This method utilizes electrical arcs to generate heat, allowing metal pieces to fuse together effectively. The arc welder creates intense heat that melts the base metal and the filler material, enabling the formation of strong and durable joints.

In welding applications, particularly with steel, the versatility and strength of the arc welding process make it a preferred choice among ironworkers. It can be used for various joint configurations and in different positions, which is essential in construction and fabrication tasks.

Other tools, such as a plasma cutter, serve different purposes; plasma cutters are primarily used for cutting metal rather than joining it. Similarly, drills and saws are utilized for creating holes or cutting materials but do not have the capability to fuse metals together like welders do. Thus, the arc welder stands out as the essential tool for welding steel joints.