PROCEDURE FOR FABRICATION OF PIPE CONNECTION (VERSIONS) AND DEVICE FOR FABRICATION OF PIPE CONNECTION Russian patent published in 2011 - IPC F16L33/00 

FIELD: machine building.

SUBSTANCE: device for fabrication of pipe connection actuates cylinder for progressive motion of central metal part and introduces central metal part into pipe furnished with screw grooves. On its internal circular surface the pipe is preliminary equipped with a sheet swelling in water. Further, the device for fabrication of pipe connection actuates a cylinder for pressing the central metal part so, that the latter presses the swelling in water sheet to internal circular surface with screw grooves of the pipe correspondingly rotating the pipe with screw grooves in such position. The central metal pipe presses the swelling in water sheet to internal circular surface of the pipe with screw grooves around its whole circumference as far, as pipe with screw groove rotates.

EFFECT: increased reliability of pipe connection.

12 cl, 21 dwg