Method and apparatus for bending composite reinforced pipe
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United States of America Patent
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Issued Date -
Apr 28, 2005
app pub date -
Oct 27, 2003
filing date -
Oct 27, 2003
priority date (Note) -
Abandoned
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Abstract
An induction heater is used to heat composite reinforced pipe (CRP) prior to a bending operation. By heating the composite reinforcement to approximately 90.degree. F.-110.degree. 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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