Water pipe with corrosion resistant inner surface - has inner plastic lining anchored to intermediate layer of mortar

The invention applies to a steel or cast-iron pipe (1) which is lined with mortar or cement (2). An inner layer of an organic-polymer material (3) is provided with a number of equally spaced radial projections (4) with bulbous tips which are embedded in the layer of morter. When the morter is harden...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	TEUBER,HANS-DIETER, GOEHLERT,IRMGARD, HAESELBARTH,HARTMUT
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	BLASTING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING JOINTS OR FITTINGS FOR PIPES LIGHTING MEANS FOR THERMAL INSULATION IN GENERAL MECHANICAL ENGINEERING PIPES SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	The invention applies to a steel or cast-iron pipe (1) which is lined with mortar or cement (2). An inner layer of an organic-polymer material (3) is provided with a number of equally spaced radial projections (4) with bulbous tips which are embedded in the layer of morter. When the morter is hardened, the polymer is held firmly in position and protects the steel from corrosion or incrustation. The projections (4) also help in centering the liner (3) when it is being installed in the pipe (1). This method of installing the liner is relatively cheap and prevents the reduction in effective bore size due to the build-up of incrustation.