Our organisation

The Gütegemeinschaft Schwerer Korrosionsschutz von Armaturen und Formstücken durch Pulverbeschichtung e.V. (GSK – Quality Assurance Association for Heavy-Duty Corrosion Protection) is an international association that provides a meeting place for all companies that coat valves and fittings with epoxy powder. GSK awards the RAL-GZ 662 Quality Mark (Gütezeichen) to companies that demonstrably meet the high requirements of GSK Quality Assurance RAL-GZ 662. The member companies are therefore monitored twice a year by an independent, accredited testing institute.

GSK is renowned for its high quality and awards its seal of approval to coating material, valve and fitting manufacturers all over the world. Together with its members, international research institutions and independent testing institutes, GSK is constantly developing further so that it can continue to take part successfully in international markets.