World first in PE 100-RC


All AGRULINE fittings are now made of PE 100-RC (RC = resistant to cracks). Modified PE 100, which until recently was only used for special, customer-specific applications, is now used throughout the entire AGRULINE product range. The main technical advantage of PE 100-RC is that it is significantly more resistant to slow crack growth. This saves costs during installation, improves safety, and extends the service life of the entire piping system.

AGRULINE Fittings and pipes made of PE 100-RC.
Pipes and fittings of PE 100-RC also show their strengths in high alpine terrain.

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Service life up to 10 times longer

In a comprehensive series of tests, the renowned HESSEL Ingenieurtechnik GmbH test institute impressively demonstrated that the service life of PE 100-RC E-couplers is many times longer than that of PE 100 E-couplers currently available on the market. The vertical axis shows the service life in an accelerated internal pressure test (90 °C, test pressure of 9.2 bar and wetting agent 2% NM5 in deionised water). The horizontal axis shows the correlating service life of corresponding test specimens in a full-notch creep test (FNCT), which were also subjected to accelerated test conditions.

The results of these tests proof a service life of up to ten times longer for PE 100-RC electro-socket fittings under identical test conditions!

Source: HESSEL Ingenieurtechnik GmbH

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PE 100-RC material requirements

The full-notch creep test (FNCT as per ISO 16770) is a recognised test method for determining resistance to slow crack growth in polyethylene. After a wetting agent has been applied, a notched test specimen is exposed to tensile stress at a high temperature (80 °C). The minimum service life for PE 100-RC fittings must be > 8760 hours acc. to PAS 1075. In contrast to this, the required minimum service life for PE 100 components acc. to DVS 2205-1 is just 300 hours. The excellent quality and operating safety of AGRULINE fittings has now been substantially improved once again through the new PE 100-RC.



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Inseparable joints

High operating pressures, as well as expansion and contraction caused by temperature fluctuations, especially in piping systems installed above ground, are hard on the welded joints. The edge of the welding zone at the centre of the coupling faces the highest exposure to tension and internal pressure loads. It has been proven that higher resistance to slow crack growth therefore leads to better long-term results. The use of AGRU fittings and pipes which are now completely manufactured using PE 100-RC achieves considerable improvements in electro-socket and heated tool butt welded joints. This enhances the long-term safety of underground and above-ground piping systems.

Simulation of stress peaks occurring around the edges of the weld under test conditions as per DIN EN 1555-3 and DIN EN 12201-3. Source: HESSEL Ingenieurtechnik GmbH

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AGRU PE 100-RC fittings

AGRU PE 100-RC fittings enable an efficient installation and trouble-free operation of supply and disposal systems. Electrofusion fittings, which were produced by injection moulding, offer superior advantages to the user.

State-of-the-art production facilities assure highest product quality by processing high quality PE 100-RC material types. Furthermore, we ensure that AGRULINE pipe and fitting components are always kept up-to-date and fulfil the technical requirements of the municipal natural gas and water supply.

Electro-socket fittings


HDPE 100-RC Reducer, Injection-moulded coupler, Elbow 45°, Elbow 90°, End cap, Tee, Gas flow guard, Adaptor fittings
Reducer, Injection-moulded coupler, Elbow 45°, Elbow 90°, End cap, Tee, Gas flow guard, Adaptor fittings

Fittings for saddle welding & valves

from left to right

  • Tapping saddles – creating branches by hot tapping
  • Pressure tapping valves – opening and closing of pressurised branches
  • Spigot saddles – an affordable alternative

Tapping saddles, Pressure tapping valves, Spigot saddles
Tapping saddles, Pressure tapping valves, Spigot saddles

Fittings for heated tool butt- and electro-socket welding

Heated tool butt welding

The planed facing surfaces of the pipe and fitting are matched under pressure onto the heating element to build up a weld bead and then heated virtually without any pressure. After the heating, the bonding surfaces are released and the heating element is removed. The pipe and fitting are pressed together for the jointing time at a specified jointing pressure.

Heated tool socket welding

Like in electro-socket welding, the pipe and fitting are welded together in an overlapping position. The two parts need to be heated to the required temperature using a heated spigot and a heated coupler. Then the two parts are bonded taking the welding parameters temperature and welding time into consideration.

  • Multi-bends – multi-functional
  • Elongated fittings – improved flexibility during welding
  • Short-spigot fittings – for heated tool butt welded pipelines
  • Heated tool socket fittings – in small dimensions
  • Sweep bends - improved flow resistance
  • FM 1613 approved pipes and fittings – for reliable underground fire protection lines
  • AGRU SDR 7.4 pipes and fittings – for high-pressure applications
  • Segmented fittings – also available in special dimensions
  • Customized fittings – in accordance with your needs

Brochures for AGRULINE HDPE 100-RC

PE 100-RC pipes

For now, AGRU fittings made of PE 100-RC are the pinnacle of more than 50 years of development work. High-precision manufacturing, full pressure and point load resistance open up new dimensions in PE piping system building.

As a single-source supplier, AGRU also provides the matching pipes in PE 100-RC for all PE 100-RC fittings. For more details on our complete system, see our AGRULINE, Large Diameter Piping System, FM Approved and Custom Parts brochures.



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