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Conventional polyethylene pipe cannot perform as well in extreme conditions, or when faced with highly abrasive material transfer; nor will it fulfil the clients ultimate design and performance requirements. This has challenged polyethylene producers, to develop advanced solutions, in order to provide systems for these ultra abrasive and harsh applications with Damos’s advanced technology, Damos NexGen Wear-Tuff is a perfomance inovation with much greater pressure and abrasion resistance, leading to a maximum pipe performance beyond PE100 for sustainable future.

10% Thickness Reduction

Faster Welding Installation

Greater Flow Volume

Improved Project Efficiency

Wear-Tuff

The Innovation

DAMOS NexGen Wear-Tuff is a performance innovation with the ability to run at greater pressures, whilst featuring better abrasion resistance; leading to a maximum pipe performance beyond the capabilities of HDPE100.

Customer Values

Damos NexGen Wear-Tuff is not only a material innovation, it also creates a number of benefits to customers, asset owners and operators, due to its ease of installation, cost efficiency and design life.

Sustainable Development

Damos NexGen Wear-Tuff has been created through intense research and development phases, in order to provide a material with higher performance than traditional PE100. The results of this higher performance means that the NexGen Wear-Tuff will provide longer service life, and higher durability, resulting in less material consumption and more sustainable manufacturing processes.

Thickness loss after 6 & 12 months of pipe usage (mm)

50% Higher Abrasion Resistance

HDPE is used in a range of pipeline applications within the mining industry, most commonly for tailings and water management pipelines in not open pit and underground mining. Tailings pipelines are used to transfer highly abrasive sedimentary slurry, hence a great deal of focus is placed on a high level of abrasion resistance in these applications.

From technical studies and mining simulation software analysis, Damos NexGen Wear-Tuff shows a 50% greater abrasion resistance than traditional PE 100.

Sand Slurry Test

Method modified from the Saskatchewan Erosion Studies
‍Silica sand slurry (48 mesh, 0.5-1.0mm, 25% by weight) Velocity of slurry 4.0 m/s The wear rates were measured in terms of thickness loss by using ultrasonic equipment.

Average Thickness Loss with Time

Damos NexGen Wear-Tuff is able to achieve higher production efficiencies, through being able to produce a 10% greater output of material, thus leading to shorter project times and higher capital savings.

Comparison of output

Damos RC

PE100 WITH EXCEPTIONAL STRESS CRACK RESISTANCE

Damos RC is a PE100 resin with high stress crack resistance and is a superior class of PE100 material. Damos RC has many times greater stress crack resistance than standard PE100 resin. Damos RC enables you to work with your designer to achieve more efficient pipelines, longer lasting pipe networks or reduced installation costs.

REDUCED WALL THICKNESS

Slow crack growth initiation can lead to brittle failure. Damos RC has increased resistance to slow crack growth initiation. The potential to downgauge pipe (reduce wall thickness) can be made possible with the appropriate use of design factors and “fit-for-purpose” design methodology. Downgauging decreases costs while increasing efficiency. Reduced material usage lowers pipe costs, while improved flow decreases pumping costs.

LOWER INSTALL COST

Damos RC has increased resistance to slow crack growth initiation which can be caused by scratches and notches during installation. Damos RC can withstand deeper notches reducing the risk of impacting upon pipe service life when compared to standard PE100 grades. Damos RC can enable installation using lower cost backfill. The high stress crack resistance of Damos RC reduces the risk of crack initiation due to point loads associated with these installation methods.

INCREASED SERVICE LIFE

The exceptional resistance to slow crack growth of Damos RC can lead to increased pipe service life, lower maintenance costs and reduced replacement rates. There is the potential for stress concentration to initiate slow crack growth wherever “squeeze-off” is used to manage pipeline flows for planned or emergency maintenance. Damos RC increases resistance to the initiation of slow crack growth wherever these stress concentrators are present.

Stress Crack Resistance Performance - Hessel Accelerated Creep Test

Damos RC, is a specialty grade PE100 resin featuring superior slow crack growth properties.

David Moss offer a full range of Damos RC grade butt welded fittings and EF fittings to complement our pipe range.

Damos RC is designed to meet or exceed the key performance requirements for hydrostatic strength MRS10), slow crack growth resistance (SCGR) and resistance to rapid crack propagation (RCP). Over many years, the mining, water and gas industries have taken advantage of the proven world class performance of Damos RC, using it in pressure pipe in large volumes.

BEYOND MINIMUM REQUIRED STRENGTH (MRS)

For Damos pipe grades, we maintain Pipe Pressure data beyond the minimum requirements of the PE100 standard. Working with Damos Technical Service, your pipe design can be optimised to achieve:

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Maximum lifetime design
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Elevated usage temperature

HIGH RESISTANCE TO RAPID CRACK PROPAGATION (RCP)

Damos RC has passed Rapid Crack Propagation (RCP) tests at critical pressures well above the requirements of the standard. RCP performance data for sub-zero application temperature is also available. RCP performance enables pipe designers to specify:

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Lower in-use temperatures
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Higher safety margins for fluid containment

Damos HDR

DAMOS HDR (DAMOS HSCR + Disinfectant Resistant) is a high density polyethylene (HDPE) PE 100 compound for pipes and fittings. Developed to tackle the ever changing challenges faced by water distribution network asset owners, DAMOS HDR is designed to cope with Elevated temperatures and more aggressive chemical disinfection systems.

Working in conjunction with the major water utilities across ANZ, DAMOS HDR aids the water utilities to preserve the quality of drinking water, whilst also improving the performance and life span of the pipes and fittings delivering the end product to the rate payer.

In addition, DAMOS HDR offers excellent resistance to slow crack growth, meaning it is also an ideal choice for HDD, and trenchless installations. DAMOS HDR is fully compliant to existing standards for drinking water pipelines ISO 4427.

Manufactured using modern extrusion technology, DAMOS presently manufacture DAMOS HDR pipe from DN25 to DN1200, from SD41 to SDR 7.4. To complement the DAMOS manufactured HDR pipe, we also manufacture HDR fittings, including Stub flanges, Long spigot Stub flanges, Wye Junctions, Sweep bends, Pull Tees, Fabricated equal tees, and Inverted (Scour) Tees. All DAMOS HDR products are manufactured to AS/NZS 4130 and AS/NZS 4131.

Advantages

Heightened resistance to chlorinated disinfectants, when compared to standard HDPE100
High resistance to slow crack growth
Enhanced Durability
Improved Service life
Copes well with external point loads
Reduced installation costs by embracing HDD and Trenchless installation
Excellent Weld ability

NOL ring test after aging in ClO2 under stress

Cond.:40°C / 2ppm clo2 / 7mpa circumferential stress

DAMOS Low Slump / Anti-Sag Resins

DAMOS has a proud and long standing reputation for the production of large diameter thick walled pipe (≥ 60mm). Using advanced manufacturing processes and modern extrusion technology DAMOS NexGen Low slump resins, allow us to expand our range of applications for HDPE pipes into new markets and industry segments, whilst utilising our 50 years of experience and track record of manufacturing large bore, heavy wall pipe for major projects.