Crack stopping in pipelines

Details Crack stopping in pipelines Crack stopping in pipelines

F - Mech Eng,Light,Heat,Weapons

16

L

189/68

F16L 57/00 (2006.01) F16L 55/00 (2006.01) F17D 5/02 (2006.01)

Patent

CA 1251407

ABSTRACT OF THE DISCLOSURE A short steel pipe for use as a crack stopper has discontinuities in the format externally or internally helically arranged individual notches, perforations or texture changes in such number that they overlap in the axial direction; and an axial line on or in the pipe will traverse at least one of these notches, perforations or texture changes.

492590

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