KARA.assortment - Products

System solutions for the water and wastewater industry

With innovation and know-how, we produce vitrified clay pipes in a wide range of sizes for municipal and industrial wastewater disposal as well as for domestic drainage systems.

With our products, you can plan securely, calculate accurately and build even better. Thanks to their outstanding properties like high durability, the highest physical and chemical resistance as well as permanent tightness our vitrified clay pipes fulfil the highest requirements for economical, safe and sustainable sewage disposal.

DURA.assortment - Products

System solutions for sewer rehabilitation

Sewer systems are as complex as the cities that dispose of them. The most complex are usually the old, brick-built sewers. They are the backbone of the sewage network - and at the same time increasingly in need of rehabilitation. 

On the route to be rehabilitated, they often have changes in cross-section, curves and bends with different radii. In such environments with changing geometries, the multi-modular DURA system, which can be manufactured into almost any shape, proves its worth. The fittings offer a wide range of adaptation options to local conditions.

Further information

Properties of vitrified clay pipes

Wastewater pipe systems made of vitrified clay easily fulfil the extremely high demands and the manifold properties of economical and sustainable operation. The characteristic features of the materials, joint systems and components themselves are excellent.

Learn more


Proof of our quality is based on the ISO 9001 quality assurance system. Additional quality assurance comes with internal and external monitoring as well as individual approvals for builders.

Learn more