Abstract: A pipe formed from a concrete cylinder has an end ring with a ferrule which can be snuggly mounted on one end of the pipe and a skirt axially adjacent to the ferrule for receiving a mail endpiece of another pipe. The ferrule is expanded as it is mounted on the cylinder and exerts a compressive force against the outer peripheral face of the cylinder for forming a secure seal. A rib may be disposed on an inner annular surface of the ferrule and an adhesive may be applied for enhancing the seal between the cylinder and the ferrule.

Abstract: The present invention relates to a pipe or the like comprising a concrete cylinder (2) having fitted onto one annular end (3) thereof a coaxial female end ring (4) comprising a skirt (6) defining a female endpiece (54) and a ferrule (5) for fastening to the cylinder (2). The ferrule (5) is in a state of circumferential elastic tension providing sealing relative to the cylinder (2) by applying pressure thereto which is distributed circumferentially in continuous manner. Sealing between the female end ring (4) and the cylinder (2) is thus reinforced.