What do crimping rolls do in metalwork?

Crimping rolls play a significant role in adjusting the shape and dimensions of metal components. In metalworking, particularly in the context of pipe and tubing, crimping rolls are primarily used to reduce the diameter of a pipe. This technique allows for connections to be made more easily, enabling the ends of the pipe to fit snugly into couplings or other fittings.

By utilizing crimping rolls, fabricators can achieve precise control over the size and shape of the tubing or piping, ensuring a tighter fit which is essential for maintaining integrity within a system, such as plumbing or structural applications. This is beneficial in applications where space is limited, or where specific dimensional requirements must be met.

The other options, while related to metalwork, do not accurately describe the primary function of crimping rolls. For instance, wire edges and forming burrs are more related to shearing and cutting processes, while creating lightweight sections pertains to material selection and design rather than to the crimping process itself. Thus, the function of crimping rolls in reducing the diameter of a pipe stands out as the most relevant and accurate description.