FIELD: construction.
SUBSTANCE: connection part for an outer end of a multi-layer pipeline comprises a connection pipe, on the outer side of which there is a radially vertical wall, which is expanded in axial direction at the radial distance from the outer side of the body. The outer side of the connection pipe, the vertical wall and the expanded section cover the circular installation space, where the external end of the pipeline may be directly inserted. The inner wall of the connection pipe is reinforced by an adjacent reinforcing layer, which has higher strength compared to the connection pipe material, at the same time the layer is equipped with axial engaging elements, and the inner wall is equipped with axial connection elements, which correspond to engaging elements and are connected to them. Also a welding apparatus is described for connection, as well as the connection method and the assembly from a multi-layer pipeline and a connection part.
EFFECT: invention increases reliability of pipeline connection.
10 cl, 6 dwg
