Quality

All products offered by WISTRA are constantly tested under strict conditions.

We garantee the consistent excellent quality of our products across the board, we have been certified according to DIN EN ISO 9002 quality management system since in 1997.

Most of the products we deliver are subjected to extraordinarily heavy workloads and loading stresses whilst in service.

Consequently, the materials we work with have to be able to cope with this kind of use and are tested thoroughly over long periods. This means absolute safety and security for our customers.