Abstract: Disclosed herein is a method for producing insulated pipes having an improved protection of the insulation material. The pipe system comprises an inner pipe with a longitudinal axis extending from a first end of the inner pipe to a second end of the inner pipe, the inner pipe comprising a middle section, a first end section at the first end of the inner pipe, and a second end section at the second end of the inner pipe, a layer of inner coating covering the inner pipe, the layer of inner coating comprising one or more inner coating sub layers, one or more layers of insulation material covering the layer of inner coating such that the insulation layer covers the middle section of the inner pipe covered by the inner coating, and the ends of the insulation layer tapers towards the end sections, and the end sections comprises a section with an exposed layer of inner coating.

Abstract: The present invention relates to a method for manufacturing an insulated pipe comprising an inner pipe, an insulation material and a casing. The manufacturing method of the present invention concerns in particular the process of molding an insulation material onto the inner pipe, comprising the step of covering the inner pipe with a closed bag with open ends and subsequently inserting the bag covered inner pipe into a mold. Hereafter the insulation material is injected in a liquid state into the mold between the inner pipe and the bag. The insulation material in a liquid state will after injection start to expand and finally solidify. During those processes, the bag is pressed towards the inner wall of the mold.

Abstract: The present invention relates to a method for manufacturing an insulated pipe comprising an inner pipe, an insulation material and a casing. The manufacturing method of the present invention concerns in particular the process of moulding an insulation material onto the inner pipe, comprising the step of covering the inner pipe with a closed bag with open ends and subsequently inserting the bag covered inner pipe into a mould. Hereafter the insulation material is injected in a liquid state into the mould between the inner pipe and the bag. The insulation material in a liquid state will after injection start to expand and finally solidify. During those processes, the bag is pressed towards the inner wall of the mould.