PIPE, PIPE CONNECTION AND CORRESPONDING MANUFACTURING METHOD Russian patent published in 2024 - IPC F16L21/03 F16L58/06 

FIELD: pipelines.

SUBSTANCE: present invention relates to a pipe comprising a first annular barrier layer (84), located at the first axial end (28) of the barrel and made with possibility counteraction axial flow of cement slurry in a non-solid state, socket end (12) and nipple end (14), wherein the socket end is limited by socket part (40) of the main body, which includes inner surface (42) of the socket, said pipe comprises flare coating (60) extending along the inner surface of the flare, wherein flare coating (60) is connected to said first barrier layer, wherein the nipple end is limited by the second axial end of the barrel, wherein flare part (40) of the main body has external surface (44) of the flare and front surface (46) of the flare, wherein the flared part is located on the side of the first axial end (28) of the barrel and is connected to the said axial end, wherein flare coating (60) extends over flare front surface (46) and flare outer surface (44).

EFFECT: invention enables to obtain a pipe which is more cost-effective and easy to manufacture, having a cement coating of controlled thickness, which does not require reworking after cementing, having effective protection against corrosion at its ends.

11 cl, 8 dwg