Flexible piping structure having a continuous metal inner tube

Details Flexible piping structure having a continuous metal inner tube Flexible piping structure having a continuous metal inner tube

1998-09-17

2000-08-08

Brinson, Patrick

Pipes and tubular conduits

Flexible

Spirally wound material

138131, 138135, 138139, F16L 1100

Patent

active

060986670

ABSTRACT:
A flexible piping structure has in combination, from the axis of the pipe towards the exterior, a cylindrical, metal inner sealing tube, a layer resistant to internal and external pressures and a sealing sheath made from extruded plastics material. In one embodiment, an intermediate layer of plastics material is arranged between the tube and the pressure-resistant layer.

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patent: 5275209 (1994-01-01), Sugier et al.
patent: 5406984 (1995-04-01), Sugier et al.
patent: 5645110 (1997-07-01), Nobileau
patent: 5669420 (1997-09-01), Herrero et al.
patent: 5730188 (1998-03-01), Kalman et al.
patent: 6006788 (1999-12-01), Jung et al.

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