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Business areas:
Pipe Bending Systems

TT Group Companies
Int. Sales Partners

If there is no TT representation in your country, please contact the TT headquarters at or phone +49 2723 808-0

Reduction method

The reduction method is a re-lining technique for which the outer diameter of the long PE pipe is mechanically reduced. As soon as it is pulled in, the reduced PE pipe string expands and elongates inside the old pipe and covers the inner wall in a close fit. 
Application: Rehabilitation of circular cross-sections of gas, water and sewage pipes from ND 100 to app. ND 1,200.
Types of damage: Corrosion, cracks, leakage, mechanical wear, encrustation, (to be removed before installation).

Standards: ATV-M 143-11, DVGW GW 320-2, DWA 127 -2, RSV M2

Further information


Maulwurf weiss


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