Adhesive connection for plastic pipes

Claim 1

Pipe connection for fiber reinforced synthetic plastic pipe made of thermosetting resin comprising a female pipe part with a tapered widened end and a male pipe part, the inside of the widened end tapering conically from the free end thereof to connect to a longitudinally extending cylindrical recess in the inner wall of the female pipe part, the tapered inner surface being a continuation of said cylindrical recess, said male pipe part having an axial protruding part along its inner wall conforming to said cylindrical recess and an outer conical end face extending continuously away from the outer surface of said protruding part and conforming to the conical shape of the inside of said widened end of the female pipe part, the length of the protruding part being greater than the length of the recess, and a glue layer between the conical end face of the male pipe part and the opposite face of the female pipe part and extending from the inside of the pipe connection as far as the outside of the male pipe part to connect said male and female pipe parts, said protruding part consisting of an inner, chemically resistant, layer of a fiber reinforced synthetic resin pipe and the outer face of said protruding part has a fiber reinforcement to reduce seepage of liquid from the inner side of the pipe connection to exposed cut surfaces of fibers on the conical end face of said male pipe part whereby the risk of corrosion to the fiber reinforced pipe is minimized.