Crack stopping in pipelines

Details Crack stopping in pipelines Crack stopping in pipelines

1985-10-04

1987-07-28

Marcus, Stephen

Pipes and tubular conduits

Miscellaneous

138150, 138155, F16L 904

Patent

active

046826327

ABSTRACT:
A short steel pipe for use as a crack stopper is described having externally or internally helically arranged individual notches, perforations or texture changes at such a number that they overlap in axial direction, and an axial line on or in the pipe will traverse at least one of these notches, perforations or texture changes.

REFERENCES:
patent: 1080897 (1913-12-01), Davies et al.
patent: 3096105 (1963-07-01), Risley
patent: 3443600 (1969-05-01), Sherwood
patent: 3698746 (1972-10-01), Loncaric
patent: 3746050 (1973-07-01), Born et al.
patent: 4001054 (1977-01-01), Makepeace
patent: 4224966 (1980-09-01), Somerville
patent: 4383556 (1983-05-01), Evgenievich et al.
patent: 4559974 (1985-12-01), Fawley

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