Socket welds are a type of which weld category?

Socket welds are a type of which weld category?

• A. Fillet welds
• B. Groove welds
• C. Butt welds
• D. Plug welds

Answer: (A)

Socket welds are defined by forming a weld around the outside of a joint where a pipe end sits inside a recessed socket in the fitting. The weld shape is a fillet—the triangular bead that forms at the intersection of two surfaces not in the same plane. That fillet geometry is the hallmark of this category, differentiating it from groove welds, which fill a prepared groove in two mating surfaces, from butt welds, which join two pieces end-to-end along a common plane, and from plug welds, which weld through a hole in one piece to connect to another. Socket welds are commonly used for small-diameter piping and rely on fillet weld characteristics to create the joint.

Socket welds are defined by forming a weld around the outside of a joint where a pipe end sits inside a recessed socket in the fitting. The weld shape is a fillet—the triangular bead that forms at the intersection of two surfaces not in the same plane. That fillet geometry is the hallmark of this category, differentiating it from groove welds, which fill a prepared groove in two mating surfaces, from butt welds, which join two pieces end-to-end along a common plane, and from plug welds, which weld through a hole in one piece to connect to another. Socket welds are commonly used for small-diameter piping and rely on fillet weld characteristics to create the joint.