Which welding symbol describes a groove weld?

The correct choice indicates that a groove weld is represented by a specific symbol in welding notation. In welding symbols, a circle denotes the use of a groove weld, which involves creating a joint between two pieces of metal that are joined at a specific angle. This type of weld is essential in situations where a strong, deep penetration is required to ensure the integrity and strength of the joint. The use of a circle also conveys that the weld should be made in a groove that is prepared in the materials being joined, allowing for better welding access and a stronger bond.

Other symbols mentioned have distinct meanings in welding notation. For instance, a square symbol typically indicates a fillet weld, while a triangle could represent a notch or a specific preparation type. The dash can signify a welding process or indicate the length of a weld. Understanding these symbols is crucial for accurately interpreting welding blueprints and ensuring proper welding techniques are applied.