Method and apparatus for bending composite reinforced pipe

Details Method and apparatus for bending composite reinforced pipe Method and apparatus for bending composite reinforced pipe

B - Operations, Transporting

21

D

B21D 7/16 (2006.01) B21D 11/00 (2006.01) B29C 53/08 (2006.01)

Patent

CA 2455536

An induction heater is used to heat composite reinforced pipe (CRP) prior to a bending operation. By heating the composite reinforcement to approximately 90°F. 110°F, the incidence of circumferential stress cracks in the resin is significantly reduced. Resin cracking is also reduced by incorporating longitudinal fibers in the composite reinforcement during manufacture of CRP.

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