WELDING CONNECTION STRUCTURE FOR PIPE
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United States of America Patent
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Issued Date -
Oct 2, 2014
app pub date -
Nov 14, 2012
filing date -
Nov 14, 2011
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Abstract
Provided is a welding connection structure for a pipe (1), in which the pipe has a double-pipe portion (2) at at least one end thereof and the double-pipe portion is formed by bending back a pipe wall (6) at the one end of the pipe inward and forming a bent-back portion in close contact with an outer pipe wall (4), and in which the pipe is connected by welding, at the double-pipe portion, to a mating member (11) to which the pipe is to be connected.
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