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CIPP: Annular space and structural integrity

The regular existence of excessively large annular spaces between the CIPP and the existing pipeline after installation has been recently the subject of controversial discussions among experts. The various reasons for the annular space as well as the effects on structural integrity are discussed.In the following technical report by Dr.-Ing. Ricky Selle a systematic approach to the topic is made. The possible reasons for the formation of annular spaces are pointed out and classified in terms of their potential. On this basis, the effects on structural integrity of the liners can be quantified. 

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  • 9th Saerbeck Pipe Symposium

    On September 22 and 23, we invited our industry to the 9th Saerbeck Pipe Symposium. Under this year's motto "The future is trenchless", the focus was on sustainability, digitalization and innovations. Once again this year, there was an exciting conference program, plant tours, live demonstrations, an exhibition area and our traditional Bavarian evening. Thanks to the 14 speakers, 28 exhibitors, 300 guests from all over the world and our SAERTEX multiCom team, the event was a complete success.



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  • Water intake in the sewer system

    The average proportion of extraneous water in the sewage plant inlet of the Abwasserzweckverband Nagold (Nagold Wastewater Special-Purpose Association) is 70% and thus clearly exceeds the value of the increased extraneous water levy to the district administrator's office. But even without this regulatory pressure, the operator of the sewage plants is already highly motivated to reduce the proportion of clear water in the association's territory. Find out in this report what contribution a SAERTEX-LINER makes to minimizing extraneous water inflows.

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  • SAERTEX-LINER® H2O receives approval in Australia and New Zealand

    We are proud to announce that our SAERTEX-LINER H2O has been successfully tested for use in contact with drinking water according to AS/NZS 4020:2018.

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  • Highlights of the successful IFAT Munich 2022

    We look back on a successful week at IFAT Munich 2022 with a lot of joy and at the same time a little melancholy because the time has passed so quickly. We are glad to finally be able to enjoy the beautiful moments of a fair again after a long time.

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  • Our interviews from IFAT Munich 2022

    At this year's IFAT Munich 2022, in addition to interesting and instructive discussions with other visitors and exhibitors, we also interviewed our own experts.

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  • Successful rehabilitation of a potable water pipe in São Paulo, Brazil

    SAERTEX multiCom supplied the latest rehabilitation project in São Paulo with some of the longest single shots ever rehabilitated. The Brás and Jardins area is always populated with people and commercial activity, so SAERTEX multiCom's trenchless solutions were a perfect fit for this project. 

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