CA1081628A - Tuyau multicouche a surface interieure a ondulation unique - Google Patents

Tuyau multicouche a surface interieure a ondulation unique

Info

Publication number
CA1081628A
CA1081628A CA311,689A CA311689A CA1081628A CA 1081628 A CA1081628 A CA 1081628A CA 311689 A CA311689 A CA 311689A CA 1081628 A CA1081628 A CA 1081628A
Authority
CA
Canada
Prior art keywords
corrugation
pipe
layer
helical
seam
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA311,689A
Other languages
English (en)
Inventor
James Nyssen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority claimed from US06/025,201 external-priority patent/US4220181A/en
Application granted granted Critical
Publication of CA1081628A publication Critical patent/CA1081628A/fr
Expired legal-status Critical Current

Links

Landscapes

  • Rigid Pipes And Flexible Pipes (AREA)
CA311,689A 1978-01-05 1978-09-20 Tuyau multicouche a surface interieure a ondulation unique Expired CA1081628A (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US86714078A 1978-01-05 1978-01-05
US867,140 1978-01-05
US06/025,201 US4220181A (en) 1979-03-29 1979-03-29 Multi-layer pipe with single corrugation in inner wall
US25,201 1979-03-29

Publications (1)

Publication Number Publication Date
CA1081628A true CA1081628A (fr) 1980-07-15

Family

ID=26699429

Family Applications (1)

Application Number Title Priority Date Filing Date
CA311,689A Expired CA1081628A (fr) 1978-01-05 1978-09-20 Tuyau multicouche a surface interieure a ondulation unique

Country Status (1)

Country Link
CA (1) CA1081628A (fr)

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Legal Events

Date Code Title Description
MKEX Expiry