All product information and QM certificates at a glance. 

Catalogs & Brochures

katalog kroll & ziller

General catalog

Complete range of rubber-steel gaskets.

katalog kroll & ziller


Flange insulation technology: insulating flange connections in water networks

Certificates & Others

iso zertifikat kroll & ziller

Certificate DIN EN ISO 9001:2015

For all industrial processes from production to shipping.

iso zertifikat kroll & ziller

Supplier Responsibility Guideline

Self-disclosure for common guidelines regarding sustainability, human rights, environment, business ethics and working conditions.

Flange assembly log

Our assembly protocol for flange connections.

Flange assembly guide

These instructions are intended as a general guide for our customers.