Aggressive soils


Ductile iron pipes and coatings for withstanding corrosion 

Underground pipelines are subject to a variety of stresses, including corrosive soils and backfills. The conventional zinc coating on the basic version of our pipes provides a high level of resistance to corrosion in most standard cases of application.

However, the soil’s corrosiveness must be assessed to determine whether additional active protection, such as a polyethylene sleeve or special coating, is required. This can be done by means of a topographical survey by our expert technical staff, which evaluates the various strata traversed and provides information on the nature of the terrain and its natural corrosiveness.  

Saint-Gobain PAM has developed special coatings made of a zinc-aluminum alloy, BioZinalium, to ensure the longevity of its ductile iron underground pipes.

TT PUX in aggressive soil

Products for aggressive soils

See also

Internal coatings for the safe transport of soft water
Determining a soil's corrosiveness to find the right protective coating for underground pipes
Pipes and fittings for sewerage systems