Pipe and method for producing the same

Details Pipe and method for producing the same Pipe and method for producing the same

1997-01-13

1999-07-20

Ferensic, Denise L.

Pipes and tubular conduits

Longitudinally seamed

Sectional

138 38, 138163, 138166, 138167, 138169, 138171, F16L 900

Patent

active

059244577

ABSTRACT:
In a pipe in which a plate material is formed into a cylindrical shape, and a one-side edge portion and the other-side edge portion are joined to each other to thereby form a pipe body, a fitting convex portion is integrally formed on the one-side edge portion of the pipe body, and a fitting concave portion is integrally formed in the other-side edge portion so that the fitting convex portion is fitted into the fitting concave portion. Further, a top end portion of the fitting concave portion is bent and received in a recess portion formed in the pipe body.

REFERENCES:
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patent: 1796015 (1931-03-01), Francis et al.
patent: 1930191 (1933-10-01), Bundy
patent: 1984232 (1934-12-01), Peremi et al.
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patent: 2749155 (1956-06-01), Kinghorn et al.
patent: 4190105 (1980-02-01), Dankowski
patent: 4513787 (1985-04-01), Hegler et al.
patent: 5038830 (1991-08-01), Arnaud
patent: 5566722 (1996-10-01), Bartholomew

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