Hiline GRE

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	0.027 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

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.