Pipe coating

Details Pipe coating Pipe coating

1984-07-13

1986-05-20

Levy, Stewart J.

Measuring and testing

With fluid pressure

Leakage

73 405A, 174 11R, G01M 300

Patent

active

045892750

ABSTRACT:
Pipe coating having a thermal insulating layer of polymeric material and an outer barrier layer is provided with an additional layer between the two layers to facilitate testing of the latter for discontinuities. The intermediate layer can be electroconductive, smooth-surfaced, or of color contrasting to that of the barrier layer.

REFERENCES:
patent: 2759175 (1956-08-01), Spalding
patent: 3420277 (1969-01-01), Ceintrey
patent: 3425455 (1969-02-01), Kilpert et al.
patent: 3882382 (1975-05-01), Johnson
patent: 4259553 (1981-03-01), Tanaka et al.
patent: 4288654 (1981-09-01), Blom et al.
patent: 4348794 (1982-09-01), Kim et al.
patent: 4446892 (1984-04-01), Maxwell

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