PAM NATURAL PUR DUCTILE IRON PIPE PROTECTED EXTERNALLY WITH ZINALIUM

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1 Introducing PAM Natural PUR. This latest Ductile Iron Pipe from TYTON-PAM features Natural a zinc-aluminium/synthetic resin coating that provides protection against the most aggresive soils and eliminates the need for sleeving. Polyurethane, or PUR, lining is state of the art in polymeric linings, preserving water quality whilst protecting the bore against aggressive conveyants FEATURES Polyurethane (PUR) lining preserves the water quality and protects the bore of the pipe from aggressive conveyants Natural Zinalium (zinc aluminium) and synthetic resin coating provides for exceptional pipeline performance and durability Pipe life increased to 3 times that of standard zinc coated pipe Suitable for more than 95% of the most frequently encountered ground types Eliminates the need for systematic soil surveys (resistivity measurements, sampling, etc) Eliminates the need for polyethylene sleeving Standard rubber ring jointing provides leaktight performance and ease of construction DESCRIPTION GENERAL APPLICATION TECHNICAL DATA Based on Saint Gobain Pam s unique expertise acquired with zinc coating, Natural now offers even greater performance. This composite coating consists of a Zinalium (zinc-aluminum alloy) base layer plus a blue synthetic resin finishing layer Developed in the Saint Gobain PAM R&D Centre, Natural has been tested under a variety of conditions. Saint Gobain PAM has demonstrated the performance of Natural with tests carried out in the laboratory (accelerated corrosion) and in actual field conditions and projects for more than 30 years PUR is an acronym for the polyurethane lining which complies with the European Standard EN For the transportation of water of the following types: - Very soft water (hardness less than 1mg/L) combined with extremely long residence times, where a seal coated cement mortar coating is not sufficient - Mineral water, i.e. water whose chemical specifications must remain unchanged between the pipeline inlet and outlet - Aggressive conveyants including septic sewage, high CO 2, chlorides, sulfates, brine Suitable for use in most aggressive soils without the need for loose polyethylene sleeving Size Range DN 80 to DN 600 End Connections PAM Standard push-on rubber ring joint Certifications EN DI pipes fittings and accessories ISO DI pipes fittings and accessories EN Internal polyurethane lining for pipes and fittings

2 Externally coated with metallic Zinalium plus blue synthetic resin PAM Natural PUR ductile iron pipes are internally lined with polyurethane MECHANICAL PROPERTIES OF DUCTILE IRON On solidification from the molten state, the carbon in steel remains combined with the iron. In cast iron, it separates from the metallic mass into a uniform dispersion of graphite flakes It is this graphite which gives cast iron its traditional qualities: - Moldability - Excellent machinability - Wear resistance due to the lubricating action of the graphite - High vibration absorption capacity The term cast iron covers a multitude of Fe-C-Si alloys, classified, amongst other things, according to the shape of those graphite flakes. Grey (flake graphite) iron is rendered brittle by the presence of the graphite flakes which are also crack initiation points By introducing magnesium to the alloy, the graphite precipitates in a spherical form. The discovery of ductile (elastic) iron or spheroidal graphite iron drastically changed the life of cast irons TWISTING OF A DUCTILE IRON BAR In grey iron, the graphite is present in the form of flakes which give the metallurgical name of lamellar graphite cast iron. Under conditions of point load concentrations, each of these graphite flakes can serve as a slip plane or notch, thus providing the potential for fault initiation In ductile iron the graphite is no longer in the form of flakes but gathered together in spherical globules, thus eliminating the fracture propagation lines. As rich in graphite as grey iron, ductile cast iron has the same traditional qualities together with three superior mechanical characteristics: - Resistance to tensile stress and impact - High elongation - High yield strength PROPERTIES OF DUCTILE IRON Ultimate tensile strength 420MPa 0.2% proof strength 300MPa Elongation (min) at break 10% Shear strength 380MPa Density 7050kg/m 3 Youngs modulus 165GPa Coefficient of expansion 1.12x10-6 C

3 PAM NATURAL PUR MARKING Ductile iron socket and spigot PAM Natural ductile iron pipes are centrifugally cast in accordance with the European Standard EN 545 Water tightness is ensured by the PAM Standard push-on joint Each pipe is subjected to a hydrostatic works test in accordance with the European Standard EN 545 MINIMUM WORK TEST PRESSURE NOMINAL SIZE. DN MPa DN 80 to DN DN 350 to DN All pipes and fittings are durably and legibly marked with the following: - a reference to the European Standard, EN the manufacturer s name or mark - identification of the year of manufacture - identification as ductile iron - the nominal diameter (DN) - the C pressure class DN L u Class e DE DI P B Mass Pressure Rating System AOP mm m mm mm mm mm mm mm kg/m Pipe Fitting MPa System MAOP MPa C C / C / C / C / C / C / C C C C C System ASTP MPa Allowable Operating Pressure (AOP) Internal pressure, excluding water hammer, that a component can safely and continuously withstand under permanent hydraulic service Maximum Allowable Operating Pressure (MAOP) Maximum internal pressure, including water hammer, that a component can safely withstand during service Allowable Site Test Pressure (ASTP) Maximum hydrostatic pressure that can be applied on site to a newly laid pipe component Note. The AOP for DN DN 300 sizes is limited by the use of transition gaskets (from AS/NZS sockets to EN spigots) to PN 16

4 NATURAL EXTERNAL PROTECTION - ZINALIUM COATING ZINALIUM S UNIQUE MICROSTRUCTURE - Polyethylene sleeving is no longer required except in locations where there is stray current - Exceptional performance and durability - Life of a pipe increased by 3 times that of a standard zinc coated pipe FORMATION OF A STABLE PROTECTIVE LAYER Zinalium coating is applied to the outer surface of the ductile iron pipe during two successive manufacturing operations: - Galvanisation by electric arc spraying of the alloy ZnAl / at 400g/m 2 (approx 70μm) - Deposit by spraying an external synthetic resin layer on the galvanised layer (120μm on average) Tests conducted by Saint-Gobain PAM show that when composed of 85% zinc and 15% aluminium (mass percentages), the alloy provides optimum protection levels ADVANTAGES In contact with the surrounding soil, the metallic zinc slowly transforms into dense, adherent, impermeable and continuous zinc salts. This acts as a protective barrier The pore sealer, whilst permitting galvanic protection and self-healing, favors the formation of a stable and insoluble layer of zinc conversion products. SELF-HEALING OF DAMAGE: One of the particular features of the external zinc coating is its ability to restore the continuity of the protective layer where small areas of local damage exist. The Zn++ ions migrate through the pore sealer to plug the damage and then convert into stable, insoluble zinc corrosion products The Natural range is compatible with more than 95% of the most frequently encountered ground types. The Natural range: - removes the need for systematic soil surveys (resistivity measurements, sampling, etc) - can cross corrosive ground without risk and without the need for additional protection using a polyethylene sleeve - simplifies the management of small and medium diameter pipeline inventories 400 WEIGHT (ZINC OR ZINC-ALUMINIUM). g/m 2 ZINC ZINALIUM The microstructure of the zinc-aluminum alloy layer is a finely constructed entanglement of zinc and aluminum rich phases. This 3D view of the zinc-rich phase enables us to see how the zinc is trapped in the microstructure, enabling its consumption to be slowed and therefore the duration of protection to be extended EPFL (Ecole Polytechnique Fédérale de Lausanne). Photograph provided free of charge by Professor M Rappaz With Zinalium, the conventional black pore-sealer is replaced by a blue synthetic resin. This synthetic resin coating makes a significant contribution to improving the performance of Zinalium compared with pure zinc coating The major improvements provided by the synthetic resin include: - Greater chemical stability - Better long-term performance in soil as it ages - Better control of the zinc-aluminum alloy conversion process - Better mechanical resistance of the coating (during transport and use) - Improved resistance to solvents present in the soil (contaminated soil) - Possibility of colouring the pipe to enable easier identification STANDARD ZINC 200 ZINALIUM LENGTH OF ACTIVE PROTECTION. YEARS

5 INTERNAL PROTECTION JOINTING For pipes in the PAM PUR range: - the inside of the pipe barrel is coated with polyurethane - the outside of the spigot and socket are coated with zinc rich paint and synthetic resin - PLC manufacture ensures rigorous control of the coating application conditions The polyurethane used by PAM is a solvent free, two component system. The pipe is heated to a temperature at which it can be sprayed, ensuring uniform application and complete curing HIGH PERFORMANCE SPECIFICATIONS Due to the thickness of its polyurethane layer, the ductile iron pipe is fully protected against the most aggressive water as well as during transport and handling operations THICKNESS OF POLYURETHANE COATING ON PUR PIPES DN Average Thickness μm Barrel Minimum Thickness μm 100 to to GASKET Suitable for drinking water mains, gaskets are made of EPDM, in accordance with the International Standard ISO EPDM has good abrasion resistance and good ageing stability - Quick, easy assembly - Gap accepted - Important safety factor above AOP - High angular deflection - EN L DN L mm ØB ØA ØA mm ØB mm Weight kg ANGULAR DEFLECTION Saint Gobain Pam Standard joint offers superior angular deflection Nom. Bore ΔӨ L m Δd cm 60 to to to to FITTINGS PN 35 fittings in sizes DN 100 to DN 300 are to AS/NZ 2280 and are supplied with a fusion bonded coating. For these pipe sizes a transition gasket (made to AS 1646) is used to transition from AS/NZS sockets to EN spigotted pipe Other sizes are supplied as ISO socket fittings and are synthetic resin coated in and out with a thickness of min 250 micron All coatings are certified according to AS/NZS 4020 All flanged fittings will be drilled according to AS/NZS 4087 PN 16 or PN 35 to facilitate connections with existing network, valves, offtake fire hydrant, etc

6 VIADUX WATER NETWORK SYSTEMS PO BOX 141 FAIRFIELD, NEW SOUTH WALES 1860 / VIADUX.COM.AU PHONE AUSTRALIA All Viadux trademarks and logos are owned by Viadux Pty Ltd. All other brand or product names are trademarks or registered marks of their respective owners. Because we are continuously improving our products and services, Viadux reserves the right to change specifications without prior notice. TPNZ1506