PIPE CONNECTING METHOD AND PIPE STRUCTURE

Title:

PIPE CONNECTING METHOD AND PIPE STRUCTURE

Document Type and Number:

WIPO Patent Application WO/1996/009498

Kind Code:

A1

Abstract:

Pipes (40) of a predetermined length are filled with a nitrogen gas (4a). Cross-sectionally hat-shaped plugs (50) comprising a brazing filler metal are press fitted in open ends of joint portions (42, 42) at both ends of the pipes (40) so as to seal the pipes (40), whereby the plugs (50) are fixed to the joint portions (42, 42). One side portion of a connecting piece (60) is then inserted into the joint portion (42) of one pipe (40) by breaking the relative plug (50) thereby, while the other side portion of the connecting piece (60) is inserted into the joint portion (42) of the other pipe (40) by breaking the relative plug (50) thereby. The plugs (50) are then melted to braze the joint portions (42) of the pipes (40) and the connecting piece (60) to each other.

Inventors:

NAKAO NORIAKI (JP)
NISHINO HARUHIKO (JP)

Application Number:

PCT/JP1995/001924

Publication Date:

March 28, 1996

Filing Date:

September 21, 1995

Export Citation:

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Assignee:

DAIKIN IND LTD (JP)
O K KIZAI CO LTD (JP)
NAKAO NORIAKI (JP)
NISHINO HARUHIKO (JP)

International Classes:

B23K1/00; F24F5/00; F16L13/08; F16L29/00; F24F3/06; F25B41/00; F25B47/00; (IPC1-7): F24F5/00

Foreign References:

JPH031025A	1991-01-07
JPS556747U	1980-01-17

Other References: