Composite pipes and process for manufacturing the same

Details Composite pipes and process for manufacturing the same Composite pipes and process for manufacturing the same

F - Mech Eng,Light,Heat,Weapons

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154/53.21

F16L 9/14 (2006.01) B21D 49/00 (2006.01) F16L 9/18 (2006.01) F16L 58/10 (2006.01)

Patent

CA 1260375

Abstract Improved composite pipes are proposed which comprise an outer pipe made of plastic and a thin lead layer on the inner wall of the outer pipe. The lead layer is formed by arranging a lead pipe in the outer pipe and expanding it by use of pressure medium into close contact with the inner wall of the outer pipe. The outer pipe may be circular or square or double-path. A process for producing the compo- site pipes is also proposed. 16

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