Cured In Place Pipe (CIPP) Calibration Tubes & Membranes

Engineered Polymer Technologies (EPT) manufactures Cured In Place Pipe (CIPP) Calibration Tubes and Membranes that are available in thermoplastic urethane (TPU) or polyvinyl chloride (PVC) designs, providing you with the perfect product for your particular CIPP process.


XTRM Ply Calibration Tubes and Membranes are a composite of our proprietary TPU, or PVC, which are reinforced with a nylon woven fabric that provides consistent pressure and support during the CIPP curing process..  These products provide a dimensionally stable product that performs at temperatures from –30° F to 300° F.  Our TPU Expansion Bladder Membrane has a Coefficient of Friction (C of F) of 1.5 to allow the bladder to easily release from your CIPP. 

XTRM Ply TPU & PVC CIPP Calibration Tubes and Membranes are suitable for air, steam and water pressure expansion systems.

Membranes are also available as prefabricated expansion tubes.

Standard Sizes, with inversion string, available from inventory include:

100 MM x 100 M

125 MM x 100 M

150 MM x 100 M

For more information on EPT XTRM Ply CIPP Membrane products, call us at 908-558-0011 or email us at  For technical inquiries, please send a detailed email to

EPT XtrmPly® TPU or PVC Calibration Tubes and Membranes benefits:


• Application Specific TPU Resin Formula


• High Temperature Resistance


• Low C of F Properties for
  Easy Release


• RF, Hot Air & Wedge Welding          Compatible


• Custom Widths and Lengths Available


• Prefabricated Tubes Available