19 Introduction Extena manufactures pipe systems for a wide variety of special applications, such as fish farms, industry, mines and ski resorts. The requirements of a pipe system vary depending on the application. In some cases, pipes with a high resistance to abrasion, chemicals or static electricity are required, while other systems require permanent monitoring or the ability to handle high pressures. In many cases, a combination of several properties is required. Extena meets these diverse needs by offering customized pipes and pipe fittings combining five different layers of functionality to create systems with the required properties. For a complete pipe system, we also offer pipe fittings to match the functions of the pipe, as well as customized pipe fittings according to drawing. As the demands for the safety and service life of pipe systems are constantly increasing, it is becoming more common for pipes and pipe fittings to be ordered from the same supplier. Extena meets these requirements by offering pipes and pipe fittings from the same batch together with Inspection certificate 3.1 according to EN 10204 for maximum traceability. Our pipes can be built with up to 5 different layers, with each layer designed to meet the customer’s needs. 1. The media pipe can be adapted to the current application. For example, it could be a standard pipe, an anti-static pipe, or a pipe that resists high temperatures up to 95°C. 2. Reinforcement layer for high pressure. 3. Intermediate or outer layers which can be used as an indicator layer, an abrasion resistant outer layer or a layer offering protection against UV radiation, etc. 4. Metallic layer for maximum permeation resistance to protect media against soil toxins and the environment when transporting harmful chemicals. This layer can also be given a monitoring function. 5. High strength sheath protects against external impact. Special applications and customized pipes and pipe fittings Project-specific pipes and fittings from the same batch For this manufacturer of fish farming equipment in Norway, we supplied pipes with a dimension of 500 mm SDR13.6 for the double floating rings and dimension 140 mm SDR11 for the rail.
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