Part for connecting pipes including an internal liner, a covering method, and a method of assembly
First Claim
1. A steel connection part having an empty inside volume defined by a non cylindrical inside surface, with a liner constituted by a layer of substantially uniform thickness of a thermoplastic material, said connection part having at least two open tubular ends suitable for connecting respectively to at least two steel pipe elements having the same internal liners.
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Accused Products
Abstract
A method of covering the inside surface of a steel connection part having an empty inside volume (1-2) defined by said inside surface, with a liner constituted by a layer of substantially uniform thickness of a thermoplastic material. The connection part including at least two open tubular ends suitable for being connected respectively to at least two steel pipe elements, each including the same internal liner. A rotary molding method is implemented in which the connection part acts as a mold. The present invention also provides a connection part obtained by the rotary lining method of the invention, and to methods of assembling a connection part of the invention, as obtained by rotary lining, with a likewise lined pipe element.
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Citations
20 Claims
- 1. A steel connection part having an empty inside volume defined by a non cylindrical inside surface, with a liner constituted by a layer of substantially uniform thickness of a thermoplastic material, said connection part having at least two open tubular ends suitable for connecting respectively to at least two steel pipe elements having the same internal liners.
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12. An assembly method of assembling a pipe, wherein a connection part is assembled with a pipe element including an internal liner, said connections part comprising:
an empty inside volume defined by a non cylindrical inside surface, with a liner constituted by a layer of substantially uniform thickness of a thermoplastic material, said connection part having at least two open tubular ends suitable for connecting respectively to at least two steel pipe elements having the same internal liners. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
Specification