Method for the sealtight jointing of a flanged sleeve to a...

Details Method for the sealtight jointing of a flanged sleeve to a... Method for the sealtight jointing of a flanged sleeve to a...

B - Operations, Transporting

23

P

26/78

B23P 17/00 (2006.01) B21D 39/04 (2006.01) B21D 39/20 (2006.01)

Patent

CA 1177230

CASE 1297 IMPROVED METHOD FOR THE SEALTIGHT JOINING OF A FLANGED SLEEVE TO A PIPELINE, ESPECIALLY FOR REPAIRING SUBSEA PIPELINES LAID ON VERY DEEP SEA BOTTOMS ABSTRACT OF THE DISCLOSURE A method for connecting in a sealtight manner a flanged sleeve to a pipe, especially for subsea gas and oil ducts, comprises the stops of introducing the free end of the pipe into the flanged sleeve with a clearance, espanding the pipe within the sleeve with the aid of a resilient expansible body which is axially compressed, releasing the axial compression and with- drawing the expansible body. The radial expansion is such as to expand the pipe at its plastic deformation condition and the sleeve within its elastic deforma- tion limit, so that a union is achieved between the the tube and the sleeve which is virtually indissoluble.

376858

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