The NATURAL range

The reference pipe for water distribution

Marquage tuyau fonte NATURAL Saint-Gobain PAM
The small/medium diameter pipe system dedicated to potable water applications available with diameters between 80 and 1000 mm. They are suitable for both transport and distribution of water in urban, semi-urban and rural areas.
Over time, the NATURAL range has imposed itself all over the UK and Europe, and it is at the heart of the networks heritage. Appreciated by pipe-laying contractors, they make installation easy. Identifiable by its blue colour, the NATURAL pipe benefits from BioZinalium® external protection technology. BioZinalium® ensures very long durability in underground conditions.
The internal lining of the NATURAL range is composed of centrifuged cement mortar. It offers excellent hydraulic conditionsas well as aneffective protectionagainst the aggressiveness of the water, NATURAL fittings are delivered with a blue epoxy coating, applied by cataphoresis or by powder coating.

Natural Pipe

Technical Details

  • Diameter range: DN80– DN800 (DN900–DN1200 on consultation
  • Push-fit joint:
    • Non restrained (Rapid)
    • Self-restrained (Rapid Vi)
More information on all jointing systems available


  • Pipes (2 options):
    • DN80-DN300: BioZinalium, Zn-AL (Cu) alloy 400g/m2 + water-based paint (Aquacoat)
    • DN350-1200: Zn-AL alloy 400g/m2 (Zinalium) + blue epoxy
  • Fittings: Blue epoxy 250μm
More information on Special Coatings here


  • Pipes (2 options):
    • System CL: Blast furnace cement
    • System XL (DN80-DN700 only): Cement mortar + epoxy seal coat (for soft water areas only)
  • Fittings: Blue Epoxy 250μm

Key Features & Benefits

  • Ductile iron material
  • Mechanically robust
  • Highly resistant to damage
  • High safety margin to operate at up-rated pressures
  • Long term reliability
  • Coating suitable for more than 90% of UK soils
  • Eco friendly: recycled and infinitely recyclable
  • Self-anchoring gasket available for restrained pipes application
  • Up to 5 degrees angular deflection

Standards & Approvals

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Technical Enquiries:
+44 (0)115 930 0700
Customer Services:
+44 (0)115 930 5000


Videos and pictures
natural pipe installation video thumbnail
natural pipe push on fitting

Potable Water

Saint-Gobain PAM supplies ductile iron pipelines throughout the world, allowing water to be transported from its source to treatment plants and places of consumption. PAM solutions cover the entire water transport cycle :

  • gravity supply ;
  • potable water distribution ;
  • water treatment ;

Saint-Gobain PAM is involved in both the preservation of the 'water' resource (quality and quantity) and its transport in all situations (mechanical stresses, pressure surges, environmental constraints, etc.).

See more

See also

PAM solutions cover the entire water transport cycle.