16 APPLICATION AREAS From water and sewage to gas and extremely demanding applications Extena offers the market’s widest range of polyethylene pressure pipe systems, developed for a variety of applications. To make it easier to find the right type of pipe, we have chosen to highlight the most common application areas. Water & Sewage Water and sewage is our largest business area and we have been a major supplier to municipal water supply systems for many years. Since the transport of drinking water is an essential social function, it is particularly important that all parts of water and sewage systems maintain a high level of quality throughout their lifetime. We therefore manufacture our pipes for water and sewage from PE100 RC, which is the best raw material for this type of pipe system. Compared to traditional pipe materials, PE100 RC has 17 times higher requirements for slow crack growth, which is the property that has the greatest impact on the service life of the pipe. We have a wide range of pipes and pipe fittings for the transportation of water and sewage. Certain conditions may require the use of pipe systems with special functions, such as a permeation barrier for the protection of drinking water when the pipe is laid in contaminated soil, and the protection of sensitive environments where the pipe transports waste water or other contaminated substances close to a water source. Another common special function is pipes with a high strength sheath for extra protection in alternative pipelaying methods. The joints are the weak point in a pipe system. A prerequisite for good joints is round pipes with low ovality. By cooling the pipes for a longer period using our “anti-stress” production method, and stabilizing them during the cooling process, we can set higher demands and significantly tighter tolerance levels regarding ovality than the standard permits. In fact, we have 40% higher requirements in terms of ovality and toe-in than specified in the standard. We have extensive experience of large projects and know how important the time aspect and reliability of supply are when working with many subcontractors. Since we have our own modern, large-capacity production facility and a complete range of polyethylene pressure pipes and pipe fittings, we are now a reliable supplier to large projects in all Nordic countries. Gas Gas transportation can have devastating consequences for both humans and the environment in the event of a leakage or breakdown. The transportation of gas is therefore a highly Introduction
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