Wilhelm Maass GmbH

The Maass Global Group is a global specialist in open die, closed die and ring rolling products in all available material grades. We are amongst the most diversified global flange manufacturers in the world by offering a complete line of material grades; Carbon, Stainless, Duplex, Low Alloy and Special Nickels in both small and large diameter sizes, combined with a full range of pressure classes.Always striving to be the best we can be, holding quality certificates in ISO 9001:2015 and PED (Pressure Equipment Directive AD WO), it is our dedication to assure a superior product and service to all of our customers. We hope you enjoy your experience with Maass Flange and look forward to your continued business.We welcome your questions that you may have, and look forward to a long professional relationship.