PIPE, IN PARTICULAR PLASTIC PIPE FOR SEWAGE PIPELINES Russian patent published in 2022 - IPC F16L21/04 F16L47/10 F16L19/65 

FIELD: pipe production.

SUBSTANCE: group of inventions relates to a pipe, in particular a plastic pipe for sewage pipelines. The pipe contains at least one bell-shaped end that is equipped with annular-shape groove (4) and bell neck (3) and that forms first pipe (1), a bell-shaped end of which is made with the possibility of insertion in it and subsequent extraction from it of a smooth end of the second pipe or profile part (13), and to annular-shape groove (4) of which elastic annular seal (6) is inserted. According to the invention, bell neck (3) of pipe (4) is equipped with screw thread (9) made with the possibility of screwing thread ring (8) on it, containing ring inner part (10) and ring outer part (11), between which an annular gap is formed, and ring parts (10, 11) are connected by means of ring side (12) facing away from annular-shaped groove (4), wherein, when screwing thread ring (8) on screw thread (9), front edge (14) of ring inner part (10) compresses annular seal (6) inserted in annular-shaped groove (4) and fixes the smooth end of the second pipe or profile part (13) in first pipe (1).

EFFECT: obtaining a design of plastic pipe for sewage pipelines.

15 cl, 4 dwg