Marquage tuyau fonte NATURAL Saint-Gobain PAM

Search product


Special applications

All Terrain solutions (TT) - PE and PUX

Ductile iron pipelines for highly aggressive soils

TT (PE or PUX) pipelines are protected by an exterior coating that is suitable for extremely corrosive soil in which a zinc coating is no longer sufficient. The range of application of coatings is specified in annex D of the standard EN545.
  • For diameters between 80 mm and 700 mm : TT PE pipes, coated with a 2 mm layer of extruded polyethylene over an undercoat of zinc (this protection conforms to the standard EN 14628)
  • For diameters between 800 mm and 2000 mm : TT PUX pipes, coated with a 1 mm layer of polyurethane thermally sprayed onto shot-blasted ductile cast iron (this protection conforms to the standard EN 15189)
The fittings for these pipes have a thick epoxy external coating for the small diameters and a polyurethane coating for the larger diameters.

In addition to tests performed in the laboratory, these coatings have been the subject of observations over a very long period of pipes laid in the aggressive marine soil of the bay of Mont Saint Michel. They have also demonstrated their efficiency in the salt deserts of the Emirates for the large Taweelah and Shuweihat projects.

Saint­-Gobain PAM's technical teams can conduct soil surveys as per the customers’ request.

DN : 80 to 2000
PN : 10 to 25

e-Catalog - TT PE & TT Pux

See also

Underground pipelines are subject to corrosive soils and back