5 Sheathed pipes Type 3 for optimal protection Extena’s sheathed pipes in PE100 RC are tested and approved according to PAS 1075, a requirement standard developed under the auspices of the German standards institute DIN (Deutsches Institut für Normung). The standard is divided into three classes as described below: Type 1 includes standard pipes made of PE100 RC material. Type 2 includes homogeneous 90/10 pipes with an integrated PE100 RC surface layer representing 10% of the material thickness. Type 3 includes pipes with a minimum sheath thickness of 0.8 mm. In order to meet the Type 3 requirements, therefore, the protective sheath must be at least 0.8 mm thick. Our sheaths are 1 to 5 mm thick for optimal protection and must not be confused with the thin layer of less than 1 mm that some pipes on the market are fitted with. All of Extena’s sheathed pipes easily exceed the requirements of PAS 1075 Type 3. Extena is leading development in Sweden Extena is the manufacturer in the Nordic region that is most forcibly driving the issue of building pipe systems with better raw materials, which significantly increase resistance to slow crack growth. At an early stage, we saw the benefits of PE100 RC pipe systems, a material that enables more cost effective pipelaying methods with a longer and safer service life – resulting in better overall cost efficiency. The pipes are a relatively low cost option, in most cases representing only 5-15% of the total cost. It should therefore be an obvious choice to use the highest quality pipes. egeplast has long recognized the benefits of using the modern PE100 RC material. As both Extena and egeplast have a clear focus on offering the highest quality and use the PE100 RC as the main raw material in production, our respective product ranges fit very well together. egeplast – expert in multilayer pipes For decades, egeplast has led the way in Europe in the development and manufacture of polyethylene pressure pipes and fittings in general and multilayer pipes in particular. Research and development have a long tradition at egeplast and over the years the company has become a recognized innovation hub. This technical leadership includes more than 60 patents for products and manufacturing processes. egeplast was founded in 1908, and its products can now be found in various technical supply systems across the globe. The head office is located in Greven, Germany, where the company operates Europe’s most modern polymer pipe system plant. The Group also has its own factory in the UK and now also includes Extena with its development and manufacturing facility in Norsjö. Together with egeplast, Extena is a leading manufacturer of pipe systems with different functions. With our multilayer pipes, we can offer systems with e.g. an impermeable barrier, online damage control monitoring and resistance to extra high pressures. Introduction
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