Grooved pipe fitting is a newly developed type of steel pipe connection pipe fitting, also called clamp connection, which has many advantages. Concept definition of grooved pipe fittings: The design specification of automatic sprinkler system proposes that the connection of system pipelines should use grooved connectors or screw thread and flange connections; pipes with a diameter e... https://www.furdfittings.com/ductile-iron-grooved-pipe-fittings/