04332073 is referenced by 44 patents and cites 5 patents.

An outer pipe is diametrically expanded by heating and an inner pipe is diametrically contracted by cooling with a coolant introduced into the inner pipe to produce between the pipes a clearance just sufficient for insertion of the inner pipe into the outer pipe, and then the coolant is pressurized to expand the inner pipe against and together with the outer pipe, the pressure being removed after the pipes have expanded to a specific diameter of the joint therebetween. The tightness of the fit between the pipes due to the expansion is further increased by the subsequent thermal shrinkage of the outer pipe and thermal expansion of the inner pipe.

Title
Method of producing multiple-wall composite pipes
Application Number
6/124215
Publication Number
4332073
Application Date
February 25, 1980
Publication Date
June 1, 1982
Inventor
Shigetomo Matsui
Kobe
JP
Toshio Yoshida
Kobe
JP
Agent
Martin Smolowitz
Assignee
Kawasaki Jukogyo Kabushiki Kaisha
JP
IPC
B23P 17/00
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