Each liner has to pass several production- and quality checks during its production.


With SOLTA®LINER-solutions, over seven million meters of pipelines around the world have already been durably rehabilitated, an unambiguous indication that we consistently meet the demanding requirements of the market. We were the first in the world to successfully obtain DIN ISO 9001 certification of the rehabilitation hose production process from fiber to ready-to-impregnate liner. Our quality management system ensures quality-compliant manufacturing processes and a continuous investment in machines and equipment. The hoses are exclusively produced using programmed machines, which allows us to guarantee the dependable and verifiable production for all types of pipe profiles and pipe diameters from 50 mm to 2000 mm.

tensile strength test
tensile strength test

Based on our many years as a member of the German Society for Trenchless Technology (GSTT), our project-specific cooperation with academic institutes and our sponsorship of dissertations we remain at all times up to date on the latest state of the art in production technology. Our in-house engineering department transforms the discoveries made and knowledge gained into market-ready products and develops new SOLTA®LINER-solutions for and jointly with our customers.


Our high quality standards are not limited to impregnant-ready liners and to the production process but extend to their installation in the field. We therefore cooperate exclusively with highly qualified, quality-oriented rehabilitation companies. Within the scope of our partnership-transcending quality management system we sponsor the testing of joint developments. Our many years of partnering with the users of our products have produced dependable and durable rehabilitation results. 





We have been certified according to ISO 9001 and maintain all quality diagrams and the liner sample for at least 2 years.

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