HDPE PE 100 RC

PRODUCT DESCRIPTION

Cost and time pressure also force providers to rethink conventional methods and use modern materials.

For example, the previously required embedding of PE pipes in sand or fine gravel is no longer necessary using pipes made of the latest PE 100-RC materials.

Conventional pipelines made of PE are exposed to higher stresses caused by stones, refuse glass and other compact materials present in the ground when no sand bedding is provided. In combination with the operating stresses (internal pressure, traffic and soil loads), the punctual or linear forces acting directly upon the pipe as a result will cause stress cracks (slow crack growth PE 100 RC multilayer pipes are co-extruded full-wall pipes with a dimensionally integrated colored outer layer (drinking water = blue, gas = orange-yellow, waste water = brown). PE 100 RC multilayer is particularly resistant to the consequences following from scratches caused when no sand bedding is provided and to point loads occurring over a longer period of time.

The targeted utilization of further developed product characteristics - resistance to slow crack growth - ensures the fulfillment of all requirements of modern and economic pipe lying. The manufacturing process ensures a service life of more than 100 years even with unconventional pipe laying (without sand bedding).

Point loads are the forces acting on surface point-pipes, which are caused, for example, by the effects of coarse stone. According to figures presented next, the point loads cause local stress concentration, which cause cracks on the inside of the tube - called. Slow crack propagation.

RC protect® tubes are made of a special kind of PE 100 RC, which was developed in conjunction with the revised profile of the requirements (alignment without sand pack) in the resistance to crack propagation.

LOWER LIFE CYCLE COSTS

» Corrosion resistance. Does not rust, rot or corrode.

» Leak tight. Heat-fused joints create a homogenous, monolithic system. The fusion joint is stronger than the pipe.

» Maintains optimum flow rates. Does not tuberculate, has a high resistance to scale or biological build-up.

» Excellent water hammer characteristics. Designed to withstand surge events.

» High strain allowance. Virtually eliminates breakage due to freezing pipes.

» Additional cost savings are achieved by lower instance of repairs.

» With no exfiltration or infiltration, potable water losses and groundwater nuisance treatment costs encountered in traditional piping systems are eliminated.

REDUCED INSTALLATION COSTS

» Material of choice for trenchless technology. Used in directional boring, plowing, river crossings, pipe bursting and sliplining.

» Fewer fittings due to pipe flexibility. Allowable bending radius of 20 to 25 times outside diameter of pipe.

» Lighter equipment required for handling and installation than with metallic materials.

» Eliminates the need for thrust blocking. Heat fused joints are fully restrained.

» Light weight and longer lengths allow for significant savings in labor and equipment.

CONSIDER THE FOLLOWING FEATURES OF HDPE PIPE

» LEAK FREE

Polyethylene pipe is normally joined by heat fusion. Butt, socket, sidewall fusion and electrofusion create a joint that is as strong as the pipe itself, and is virtually leak free. This unique joining method produces significant cost reductions compared to other materials.

» CORROSION, ABRASION, AND CHEMICAL RESISTANT

Polyethylene piping’s performance in mining, dredging and similar applications proves it will outwear many more costly piping materials when conveying a variety of abrasive slurries. HDPE has excellent corrosion resistance and is virtually inert.

It does not need expensive maintenance or cathodic protection. It offers better overall resistance to corrosive acids, bases and salts than most piping materials. In addition, polyethylene is unaffected by bacteria, fungi and the most “aggressive” naturally occurring soils. It has good resistance to many organic substances, such as solvents and fuels.

» EXCELLENT FLOW CHARACTERISTICS.

Because polyethylene is smoother than steel, cast iron, ductile iron, or concrete, a smaller PE pipe can carry an equivalent volumetric flow rate at the same pressure. It has less drag and a lower tendency for turbulence at high flow. Its superior chemical resistance and “non-stick” surface combine to almost eliminate scaling and pitting and preserve the excellent hydraulic characteristics throughout the pipe service life.

» LIGHTWEIGHT AND FLEXIBLE.

Polyethylene pipe is produced in straight lengths or in coils. Made from materials about one-eighth the density of steel, it is lightweight and does not require the use of heavy lifting equipment for installation. It reduces the need for fittings, is excellent in shifting soils and performs well in earthquake-prone areas. HDPE resists the effects of freezing and allows bending without the need for an excessive number of fittings. Since HDPE is not a brittle material, it can be installed with bends over uneven terrain easily in continuous lengths without additional welds or couplings.

» DUCTILITY AND TOUGHNESS.

Polyethylene pipe and fittings are inherently tough, resilient and resistant to damage caused by external loads, vibrations, and from pressure surges such as water hammer. Even in cold weather polyethylene pipe is tolerant to handling and bending.

» MANUFACTURED UNDER AWWA, NSF, ASTM, AGA, EPA, DNR, DOT, API, FM, CSA AND OTHER NATIONALLY RECOGNIZED STANDARDS.

Polyethylene pipe is listed and approved by the standards or committees of the agencies listed above.

» AVAILABLE IN DIAMETERS FROM ½ INCH TO 63 INCH.

Polyethylene pipe is available in a wide range of diameters and wall thickness, with flanges, elbows, tees, wyes, and valves, providing a total system solution. HDPE pipe is also available in Iron Pipe Size (IPS), Ductile Pipe Size (DIPS) as well as metric sizes. Plastic Pipe Institute members can provide pipe, fittings and other appurtenances.

» APWA COLOR CODING BY APPLICATION.

Polyethylene pipe is available with color coding by application as developed by the utility location and coordination council of the American Public Works Association (APWA).

COMPARISON OF PE 100 TO PE 100-RC

All characteristics of the raw material PE 100 proven over many years are also fulfilled by PE 100-RC, e.g. MRS 10. The only but significant difference is the outstanding resistance of PE 100-RC to stress cracking.

Processing, particularly the joining technique, is subject to the same conditions. Welding (e.g. heating element butt welding) is governed by guideline DVS 2207-1 for PE 100-RC as well and possible without any restrictions.

The growing demand for faster and more economic pipe installation with less environmental disturbance has led to new installation techniques. The last several years has seen investors in the infrastructure system construction industry searching for solutions for reducing investment costs with advanced technologies. The phenomenon encompasses both new pipelines and the renovation of current ones.

These include sandless bedding, pipe bursting and horizontal directional drilling. In order to apply such methods of pipe-laying and because of their aggressive impact on pipe, these new methods need new plastic pipe materials - a product that has its external surface durability several times higher than normal and a higher point load resistance.

WHAT IS PAS 1075?

In terms of a common definition of the material PE 100-RC the PAS 1075 (Public Available Specification) titled “Pipes made of polyethylene for alternative installation technologies” was published by DIN. This public available specification is considered a supplement to existing standards and regulations.

The scope of PAS 1075 is the increased resistance to slow crack growth of PE 100-RC pipes which are used for alternative installation technologies, such as horizontal directional drilling, burst-lining or installation without sand embedding. The requirements, characteristics and test procedures as well as the respective quality assurance procedures are regulated and ensured via third party inspection. Polyethylene pipes, which are described in the regulation, do have a significantly higher resistance to slow crack growth compared to regular PE 80 and PE 100 pipes.

ADVANTAGES OF PE 100 RC PIPES

PE 100 RC class materials and the most advanced plastic processing ensure the highest reliability of the product.

Good abrasion resistance

High stress crack resistance

Good resistance to point loads (e. g. stones, fragments) (Dr. Hassel's test)

High resistance to slow crack growth

Optimal choice for pipe-laying without sand embedding and backfill

Excavated soil to be used as backfill material

Can be used for trenchless pipe-laying

Can be butt-welded, ERW, poly fusion welded or connected mechanically

Compatible with classic PE pipes

WHAT IS THAT ENSURE PROTECTION AGAINST OCCURRING POINTS LOADS WHEN NO SAND BEDDING IS PROVIDED?

The notch test acc. to PN EN ISO 13479 is a pressure test conducted on a section of a pipe that has been notched on the surface, and then submerged in water at a given temperature and put under hydrostatic pressure. The notch test allows determining the resistance of pipes to the fast propagation of cracks. The PE 100 RC pipe should withstand the hydrostatic pressure given for 5 000 hours. (PE 100 RC Multilayer 10 000 h).

Moulded plate in order to test its resistance to environmental conditions. The sample is  notched and then stretched in an Arcopal solution at a specific temperature.

The RC material sample should withstand these conditions for 3 300 hours without exhibiting damage (acc. to ISO 16770) (pe 100 RC multilayer pipe withstand >8 760 h).

Dr. Hessel’s point load test is used to determine a material’s resistance to slow propagation of cracks. A sample of pipe section is subjected to external point pressure in a given timeframe and at a specific temperature. The RC sample should withstand these conditions for 8 760 hours without exhibiting damage (PE 100 RC multilayer = 10 000 h).

» Point load test: required result met, test interrupted after 10 000 hours.

» FNCT: required result met.

» Notch test: required result met, test interrupted after 10 000 hours.