Large-calibre pipe of thermoplastic material

Details Large-calibre pipe of thermoplastic material Large-calibre pipe of thermoplastic material

F - Mech Eng,Light,Heat,Weapons

16

L

189/56

F16L 9/12 (2006.01) E03F 3/04 (2006.01) F16L 9/16 (2006.01)

Patent

CA 2025725

17824 ABSTRACT OF THE DISCLOSURE A large-caliber pipe consisting of thermoplastic, constructed from an extruded hollow plastic profile having helical turns welded along a helical contact seam. The hollow plastic profile is a multi-cell profile having a rectangular overall cross section and a rectangular cross section of the cells. The plastic has an integrated reinforcement consisting of embedded fibers in a quantity of 5 to 30% by weight, preferably about 10% by weight, based on the total weight. At least a proportion of the fibers is oriented in the direction of the turns. The orientation of the fibers results in an anisotropic modulus of elasticity and hence an increased annular rigidity and stability.

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