PROCEDURE FOR CONNECTING PIPES WITH INTERNAL COATING Russian patent published in 2015 - IPC F16L13/02

Abstract RU 2553842 C1

FIELD: machine building.

SUBSTANCE: procedure for connecting pipes with internal coating including installation and securing of back-up bushing with installed sealing elements inside pipe ends, and pipes connection by welding, the back-up bushing is secured inside the pipe ends by spreading using mandrel bar through the branch pipe out of thermoplastic.

EFFECT: simplified process of connection of pipes with internal coating, and increased quality of corrosion protection of pipes welded joint.

1 dwg

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RU 2 553 842 C1

Authors

Ajduganov Vjacheslav Mikhajlovich

Dates

2015-06-20—Published

2014-02-19—Filed