Which type of joint is commonly used in structural welding?

Butt joints are a fundamental type of joint used in structural welding due to their ability to provide strong, continuous connections between workpieces, especially in applications where strength and straight alignment are critical. This joint involves the ends of two pieces being aligned and welded together, which is highly effective for constructing various structural elements like beams and girders.

The design of a butt joint maximizes the weld area and minimizes stress concentrations, making it ideal for load-bearing structures. In many cases, it can be designed to go through further machining or finishing processes without compromising the integrity of the joint. Additional benefits include cleaner appearances and suitability for automation in welding processes, which enhances productivity and efficiency in larger construction projects.

Other joint types may serve specific applications but aren't as universally employed for structural integrity and load-bearing capacity as butt joints.