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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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  • 100,000th SAERTEX-LINER successfully installed

    Saerbeck and Valladolid, February 2023 - SAERTEX multiCom announces the successful completion of a very special trenchless rehabilitation project. The 100,000th pipe liner from SAERTEX multiCom was successfully installed in the major Spanish city of Valladolid. The installation was carried out by the Spanish installation company STLIMA on behalf of the local network operator AQUAVALL as part of a major project that included 49 kilometers of sewer rehabilitation.

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  • SAERTEX multiCom LP reopens impregnation for CIPP liners 

    Huntersville (North Carolina, USA), February 2023 - SAERTEX multiCom LP's new production facility is up and running again. Originally, operations began in spring 2022 with a brand-new impregnation and dry liner production line. The state-of-the-art facility, with innovative design, is dedicated to increasing in-house production capacities and capabilities in the United States. In july 2022 a fire damaged a significant section of the new wet-out equipment. However, the plant is fully operational after seven months of dedicated efforts between SAERTEX multiCom's German and USA-based teams.

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  • Pioneer with Clear Objectives

    SAERTEX multiCom is capable of handling pressure – especially in the trenchless segment. The international manufacturer of UV-cured GFRP pipe liners is a pioneer in precisely this technology. A member of the SAERTEX Group, the company is also making great strides in terms of sustainability. Read the interview for B_I MEDIEN with our Global Managing Director Kai Diecks and Global Director Products Dr. Nils Füchtjohann about developments in the pressure pipeline segment, sustainability and technical opportunities offered by pipe liners, as well as corporate strategies and goals.

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  • Highlights 2022

    Thank you all for great moments in 2022.Watch the video to see our highligts 2022.

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  • First SAERTEX-LINER® H2O in Canada

    In November 2022, SAERTEX multiCom LP, in collaboration with Lafontaine Inc. (Lévis, Québec), successfully installed SAERTEX-LINERS H2O across the Concorde Bridge (Pont de la Concorde) in the city of Montreal, Québec. The DN 425 x 4.3mm installation spanned more than 1400 meters and comprised two parallel pipes lined in 8 separate installations. Read more about this project.

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  • Success with SAERTEX-LINER MULTI for Southern Relining

    Driven to offer long-term rehabilitation solutions, Southern Relining recently undertook a relining package in Bowral NSW on behalf of Wingecarribee Shire council. Part of this package involved restoring flow to approximately 110 metres of DN150 pipe located under Corbett Gardens and continuing under a busy retail strip which included coffee shops, retail businesses and public toilets.

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