A rigid, pre-insulated glass-reinforced epoxy (GRE) pipe system capable of operating at temperatures and pressures previously only achievable with steel systems, it offers outstanding thermal performance coupled with exceptional levels of reliability

A composite pipe manufactured from helical-wound glassfibre reinforced epoxy material that is designed for use in heating and cooling networks. Offering a operational service life of 50+ years when operating at 95°C and 10 bar, the service pipe will accommodate pressures of up to 16 bar and details of service life at other temperature and pressure combinations can be supplied on request.

Standards

The GRE service pipe is manufactured in line with procedure ISO 14692; 1-4 and ASTM D 2310 class 11FX1 and ASTM D 2996, indicating type, grade, class and long term pressure strength classification for the GRE pipe axial load resistant type of pipe being RTRP-11 FW1. Hiline GRE pre-insulated pipes and fittings for thermal utilities are manufactured within an ISO 9001 accredited environment, generally in accordance with the requirements of EN 253 and in compliance with EN 448, EN 488, EN 489 and EN 13941.

Technical Specifications

Hiline GRE
Maximum Continuous Operating Temperature +95°C
Operational Service Life +50 years
Peak Operating Temperatures up to +120°C
Maximum Operating Pressure 16 Bar
Thermal Conductivity 0.021 W/mK
Service Pipe GRE
Thermal Insulation PUR / CFC free / water blown

Tough Outer Casing

Manufactured in HDPE to the requirements of the EN253 standards, the tough and resilient outer casing enables the pipe to be buried directly in the ground.

Tough Outer Casing

Manufactured in HDPE to the requirements of the EN253 standards, the tough and resilient outer casing enables the pipe to be buried directly in the ground.

Complete System

Hiline GRE has a comprehensive range of pre-fabricated bends, tees, fittings and accessories that enable it to be adapted to meet all possible configurations – including transitions to other types of pre-insulated pipe systems – such as Hiline Steel or Hiline Flex.

Hiline GRE can be offered as off-site pre-fabricated fittings and spool assemblies to meet a client’s bespoke requirements – significantly reducing installation time and cost

Robust and Adaptable Joints

The Hiline GRE service pipe is joined by means of an adhesive-bonded taper socket and spigot technique that provides secure and reliable connections that will exceed the life expectancy of the pipe system. The HDPE outer casing can be joined using the proven Hiline range of wrap-around heatshrink or electro-fusion couplings to ensure the very tightest of joints to protect against the ingress of ground water.

Robust and Adaptable Joints

The Hiline GRE service pipe is joined by means of an adhesive-bonded taper socket and spigot technique that provides secure and reliable connections that will exceed the life expectancy of the pipe system. The HDPE outer casing can be joined using the proven Hiline range of wrap-around heatshrink or electro-fusion couplings to ensure the very tightest of joints to protect against the ingress of ground water.

Trace Heating and Leak Detection Options

Hiline GRE is available with the option of integrated trace heating cables to protect the media temperate and leak detection systems that warn of moisture ingress into the insulation

Hiline GRE

OD [mm] PN [bar] Size [mm] Bore/s [mm] Casing [mm]
30.2 PN50 DN25 25.0 110
45.2 PN50 DN40 40.0 125
55.2 PN40 DN50 50.0 140
86.4 PN32 DN80 80.0 200
106.4 PN25 DN100 100.0 225
156.4 PN20 DN150 150.0 315
208.2 PN20 DN200 200.0 355
258 PN16 DN250 250.0 450
309.2 PN16 DN300 300.0 500
411.8 PN16 DN400 400.0 630
463 PN16 DN450 450.0 630
514.2 PN16 DN500 500.0 710
616.8 PN16 DN600 600.0 900
* Based on EN1057 (Table X equiv.) Other specifications available on request ** Based on Series 2 insulation

Training and Support

As manufacturer, it’s important to us to ensure that our systems deliver exceptional performance throughout their working life. Therefore, we have established an array of world-class support services that help our clients every step of the way.

CPD Programme

CPV Ltd is CIBSE-accredited provider of CPD courses for Pre-insulated Heat Network Design and Specification

Electronic Surveillance Systems

We offer full a range of systems and supporting services for the main types of surveillance technologies, including the Nordic, Brandes and HDW systems.

CarboSeal Relining System

We are the UK representatives of the innovative CarboSeal relining system for buried heat networks. This enables failing networks to be repaired without the need to excavate the entire sections of pipe.

The Hiline Range

Downloads

Product Catalogues

Hiline GRE Flyer

Hiline Range Brochure

Get in touch

Please use the details below to contact us
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  • +44 (0)1794 322 884

CPV Ltd
Woodington Mill,
Woodington Road
East Wellow, Romsey
Hampshire, SO51 6DQ
United Kingdom

Registered Office
CPV Ltd
Station Road West
Ash Vale, Hampshire
GU12 5LZ
United Kingdom

Registered in England & Wales
468471

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