TT Range-Special Coatings
Quality of the external coatings that protects pipes against the damaging effects of the soil is crucial. Saint-Gobain PAM UK has developed zinc-based active protection solutions to ensure durability of its buried ductile iron pipes. Although these coatings originally used pure zinc, ZINALIUM zinc-aluminium alloys have now gradually been introduced into the ranges. However in extremely aggressive soils with marine water table, acidic peaty soils, soils contaminated by industrial pollution or subject to stray currents, for example, these active protection systems do not ensure the required durability. In these circumstances, rarely encountered in practice, the solution is to use products with passive coatings that totally isolate the pipe network.
More information on all jointing systems available
Pipes (2 options):
TT PE: DN80-700, zinc 200 g/m2 + polyethylene
TT PUX: DN800-2000: polyurethane coating (900 microns) on the barrel, red-brown epoxy (300 microns) on spigot end and inside socket - conformity to EN 14901 and EN 15189
Fittings: Epoxy 250μm (Polyurethane coating DN1400-2000 available on consultation)
Sewer: High alumina cement
Water: Blast furnace cement
Fittings: 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 all UK soils
- Eco friendly: recycled and infinitely recyclable
- Self-anchoring gasket available for restrained pipes application
- Up to 5 degrees angular deflection
Standards & Approvals
In specific conditions where standard offer is not suitable, Saint-Gobain PAM UK is able to supply pipes wrapped with medium duty self-adhesive tape.
The tape consists of a combined anti-corrosion mastic and pressure sensitive adhesive, laminated to a flexible PVC backing.
Generally factory-applied to the pipe barrel leaving the socket and spigot area to be wrapped after jointing. Each wrap overlaps the preceding one by approximately 25mm or 55% depending upon the degree of protection required.
In specific conditions where Saint-Gobain PAM UK's standard offer is not suitable, the use of PE sleeving may be appropriate.
The principal function of the polyethylene sleeving is to separate the pipe from contact with the soil environment thus preventing non-uniform contact with the soil solids.
PE sleeving is generally applied on site to standard zinc coated pipes.
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.).