Jacketing steel tubes and pipes

B - Operations – Transporting – 29 – C

Patent

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18/770

B29C 47/02 (2006.01) B29B 13/06 (2006.01)

Patent

CA 1169618

ABSTRACT OF THE DISCLOSURE A steel pipe is jacketed by concurrent extrusion of an ethylene hose concentric with a copolymer hose serving as an adhesive, the pipe passing through the extruder head at an approxi- mately 10% higher speed. The copolymer is predried, and the pipe is preferably pre-coated with thermosetting resin, such as phenol resin or an epoxy resin.

392069

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