Steel insulated pipes

Preinsulated bonded TwinPipe 2 x 60.3/ 200 – conti method – is a preinsulated pipe with 2 media steel pipes diam. 60.3 mm and casing pipe (200 mm). Length of product – 12 meters. Conti TwinPipe (axial) is a complete transmission and distribution system for district heating. Using TwinPipe for district heating pipelines systems can lead to significant savings in terms of heat loss and CO2 emissions, as well as investment and operating costs. In the axial conti process pipes are made by casting the insulation onto the service pipes in a moving mould, after which the casing is extruded onto the insulation. The production takes place in continuous process. An effective diffusion barrier foil, preventing diffusion of insulating gases is embedded between the insulation and the casing. Consequently, continuously produced pipes with diffusion barrier foil do not age in relation to heat loss property.

LOGSTOR TwinPipe pre-insulated pipes are a pipe-in-pipe assembly with a composite structure consisting of: - two steel service pipes or steel compensator, - thermal insulation made of rigid polyurethane foam (PUR) with a porous structure, light yellow in color, foamed with the use of cyclopentane, - outer jacket made of polyethylene (PE-HD), made directly in the continuous production process of pre-insulated pipes or made of a pipe produced in a separate production process, black (with or without a diffusion barrier layer). "Axial conti" method - in which thermal insulation of the pipe is made in one process line (by applying successive layers of mixed foam components to the carrier pipe placed in a movable form) and the protective coat is pressed onto the ready insulation; the method is used for the production of LOGSTOR pipes with a casing diameter of DC 90 ÷ 315 mm; Technical data: Axial continuous production method: Straight TwinPipe Diameter of carrier pipe: 60.3 mmSteel carrier pipe Insulation serie 1 With a diffusion barrier which ensures that the insulation property is kept constant over life time Lambda value 50: 0.023 W/mK Used materials: Steel pipe: Longitudinally or spiral welded P235GH according to EN10217-2 Insulation: Polyurethane foam; Properties: Minimum as required in EN 253 Blowing agent: Cyclopentane Outer casing: Polyethylene, HDPE, bimodal (Minimum PE 80, ISO 12162); Properties: Minimum as required in EN 253. All parts are fully weldable within the melt flow index: MFR variation ≤ 0.5 g/10 min. Thermal stability: Oxydation induction time (OIT): > 20 min. at 210° C. Surveillance system: Wires: 1.5 mm2 copper wires (one is tinned). The embedded copper wires are the backbone of the electronic surveillance systems which is available for most of our pipe systems.

LOGSTOR TwinPipes are used for distribution pipelines within district heating/cooling systems.