What is a double butt weld?

A double butt weld is indeed best described as a weld that joins two ends of plates. In this type of weld, the edges of two plates are aligned and welded together, forming a joint that connects them end-to-end. This method is commonly used in various structural applications where a strong and continuous joint is required between two materials, providing a reliable and durable connection.

In welding terminology, the "double" aspect refers to the weld being completed on both sides of the joint, which enhances the strength and integrity of the weld. The weldment can be flush with the surfaces of the plates, making it less prone to corrosion and improving the overall aesthetics of the joint while maintaining structural efficiency.

Other options refer to different types of weld joints or configurations which do not accurately describe the double butt weld. For instance, overlapping surfaces or applying welds at right angles pertains to different welding techniques. Understanding these distinctions is crucial for selecting the appropriate welding method for specific applications in materials processing.