The widely known SPIROsol helically corrugated steel pipes have been in trouble-free use for over 100 years. The pipes are light weight and can be installed quickly and easily.
SPIROsol can be used to refurbish old concrete pipes. It can be done by pulling the SPIROsol pipe inside the old concrete pipe without closing the road. As the diameter of the SPIROsol pipe is smaller than the concrete pipe space can be filled up with concrete foam. They are supplied in diameters ranging from Ø300 through Ø2500mm in lengths till 12m. The most common diameters are carried in stock. They can be coupled by means of a Spifix coupler. Because of the light, flexible constructions, no foundation is needed and simple ground consolidation is sufficient.
SPIROsol pipes are made out of galvanised steel, but can also be provided with one of the following coatings: Plastisol, Trenchcoat® or Duflex 240.
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