Pipe joints or couplings – With casing – lining or protector
Patent
1986-04-02
1987-08-25
Callaghan, Thomas F.
Pipe joints or couplings
With casing, lining or protector
285333, 138DIG6, 204197, F16L 5500
Patent
active
046888284
ABSTRACT:
A tubing joint for the corrosion protection of a production string of metal tubes having one or more annular grooves on the surface of the tube for the inclusion of sacrificial metal rings. Preferably, the metal rings are substantially coincident with the tubing surface.
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