BIPLASTIC PIPE Russian patent published in 2005 - IPC

FIELD: mechanical engineering; pipe transport.

SUBSTANCE: invention can be used in laying plastic pipelines. Proposed biplastic pipe contains carrying layer made of glass plastic, lining layer and locking rings arranged along pipe axis. Lining layer is formed by winding thermoplastic material on pole to form T-shaped locking rings with winding of glass fabric impregnated with phenol-formaldehyde resin with subsequent solidifying of resin and melting of thermoplastic material. Caoutchouc-based raw calendered rubber is used as thermoplastic material, or polyethylene, polypropylene or polyvinylchloride film. Pipe is provided with bell for connecting the pipes with subsequent melting of lining layer in place of contact in bell part. To reinforce connection of pipes, sleeve-band is used which is arranged on outer surface of bell part. Pipe-to-pipe joint is reinforced by welding stainless material inserts.

EFFECT: improved reliability of pipeline.

6 cl, 5 dwg