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On Friday, 19.09.2025, WKT celebrated its 70th anniversary with a festive event at the company headquarters. The three managing directors Nils Zimmermann, Oliver Denz and Thorsten Kattenstein welcomed numerous guests from Germany and abroad — including long-standing customers, suppliers and business partners, who accepted the invitation and made the day a special moment in the company's history. Under the proven corporate motto “Seeing the future through our pipes.”, the event offered a multi-faceted review of seven decades of corporate development as well as an inspiring outlook on upcoming projects and visions.

Modern infrastructure would be inconceivable without plastic pipes. Whether in drinking water supply, wastewater disposal or industrial applications - the selection of the right material is crucial for efficiency, durability and sustainability. At WKT, the focus is on diversity: polyethylene (PE), polyamide (PA) and polyvinyl chloride (PVC) form the basis for a broad portfolio that covers almost all requirements. But what makes these materials so special and how do we process them to offer you the optimum solution?

In this article, we take a look behind the scenes and show what needs to be taken into account when laying our plastic pipes in order to fulfil the highest standards.