Grooved fittings are key components in piping systems, featuring grooves on their ends that correspond to grooves on pipes for quick and secure assembly using mechanical couplings. Widely used in fire protection, HVAC, and industrial piping, these fittings eliminate the need for welding or threading, offering flexibility and ease of installation. They provide reliable connections, accommodate thermal expansion, and ensure efficient fluid flow, making them a preferred choice for various piping projects.