Corrosion-resistant pipe coupling structures

Details Corrosion-resistant pipe coupling structures Corrosion-resistant pipe coupling structures

1985-01-16

1986-07-15

Callaghan, Thomas F.

Pipe joints or couplings

With casing, lining or protector

Lined

285286, 285329, 285383, F16L 1500

Patent

active

046002197

ABSTRACT:
A corrosion-resistant pipe coupling made of carbon steel has on its inner surface an intermediate annular projection directed radially inward. At least an innermost part of the annular projection is formed of corrosion-resistant material such as stainless steel. The annular projection may be covered by a corrosion-resistant annular member which is secured by friction welding, electron beam welding, an adhesive or mechanical engagement. The annular member prevents corrosion of the coupling by corrosive fluids flowing in pipes.

REFERENCES:
patent: 492159 (1893-02-01), Harrington
patent: 2070291 (1937-02-01), McHugh
patent: 2241517 (1941-05-01), Moise
patent: 3119632 (1964-01-01), Skinner
patent: 3175284 (1965-03-01), Cotovsky
patent: 3253841 (1966-05-01), Ahmad
patent: 3266821 (1966-08-01), Safford
patent: 3620555 (1971-11-01), Hinds
patent: 3919761 (1975-11-01), Bomberger, Jr.
patent: 4400019 (1983-08-01), Fruck

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